Ahmed Imran

Hi,

Based on your screenshot, it looks like you are using PHP 8.4, which may not be compatible. Please try switching to PHP 7.4 to 8.1.

If you are using the Challan Pro version, we are unable to provide support here due to forum guidelines. This could also be a site-specific issue. For further assistance, please contact our technical support team at webappick.com/contact.

Hi @przemokrzak,
Sorry for the inconvenience.

A critical error may be caused by conflicts with other plugins, a PHP version issue, or missing dependencies. Please try the following steps:

1. Check for conflicts – Temporarily disable other plugins and test again.
2. Update PHP version – Ensure your server runs PHP 7.4 to 8.1, as these are compatible with Challan.
3. Enable/Disable debugging – Go to Challan Settings > check the “Enable Debug Mode” option – https://prnt.sc/w9gQR46sxvlW.
4. Reinstall the plugin – Deactivate, delete, and reinstall Challan to ensure no corrupted files.

If the issue persists, please let us know.

Hi! Thanks for updating the plugin and checking the invoice settings.

Since you’re using VikBooking, which also generates invoices, it might be interfering with Challan’s invoice numbering. Some booking plugins create their own invoice numbers, which could cause gaps or conflicts.

To check if VikBooking is affecting the sequence, try disabling it temporarily and then generating a new order with Challan. If the invoice numbers remain consecutive, then VikBooking is likely the cause.

Let us know how it goes!

Hi @manuds33,

Thanks for your support and for using our plugin.

The issue with non-consecutive invoice numbers might be site-specific. Please check which version of Challan you are currently using.

Additionally, verify the invoice number settings by navigating to:
Challan Settings > Order Settings > Next Invoice No.

You can refer to this screenshot for guidance:
https://prnt.sc/Lmc2va4PFyI_

Also, check if you have any other plugins affecting order processing.

If the issue persists, please let us know!

Hi?@shakoor99,

Thanks for reaching out to us.

You may be referring to premium version features. As per?WordPress forum policy, we are unable to discuss premium-related questions here.

For further assistance, please reach out to our support team directly through our official website.

Hi @muzammilshaikh,

Thank you for reaching out!

To preview the invoice online without downloading every time, follow these steps:

Go to Challan Settings > Order Settings > Invoice Download As > Select “Open in new tab” > Save Changes.
Try previewing again.

If it still downloads instead of opening in a new tab, it may be a browser-related issue. Try using a different browser or disabling any extensions that might be forcing downloads.

Let us know if you need further assistance!

Hi @tdesws,

Thanks for reaching out to us.

You may be referring to premium version features. As per WordPress forum policy, we are unable to discuss premium-related features here.

For further assistance, please reach out to our support team directly through our official website.

Hi @jitksaha,

Thanks for reaching out to us.

Please ensure your logo is in JPG or PNG format and re-upload it via Challan Settings > Seller & Buyer > Logo Upload, then save changes. Troubleshooting Steps:

1. Clear Cache – Clear your site and browser cache, then check in an incognito window.
2. Verify Upload – Ensure the logo is correctly uploaded in wp-content/uploads/.
3. Check File Permissions – Set folder permissions to 755 or 775 if needed.
4. Try a Different Template – Switch to another invoice template to test.

If the issue persists, please let us know.

Hi @kampot888,

Thanks for reaching out to us.

The challan plugin name displayed in the backend plugin list is set within the plugin’s core files and is not translatable via Loco Translate or other translation plugins. WordPress does not allow modifying plugin names dynamically from translation files.

As per WordPress support forum policy, we are unable to discuss Pro versions of the plugin here.

For any questions related to the Pro version, please reach out to our support team directly through our official contact page.

Hello @groeneveldinstallatie ,

Thank you for reaching out to us.

We understand your concern about the layout of the download/print options on the “Thank you” page. Unfortunately, as per WordPress support forum guidelines, we cannot discuss the paid version of the plugin here.

For assistance with the Pro version, please contact us directly through our support portal at webappick.com/contact, and we will help you customize the layout as per your requirements.

Best regards,

Hi @mosesmedh,

Thank you for your suggestions and guidance. I appreciate the effort in explaining the solution. However, I’ve found a solution that better fits my needs.

Thanks again for your support!

Hi,

Thank you for reaching out.

Currently, displaying VAT included in the product price instead of only in the total is not available in the free version. As per WordPress forum guidelines, we are unable to discuss features of the pro version here.

If you have further questions, feel free to contact us directly via our support page.

Hi,

Thank you for sharing your feedback, and we’re glad to hear that you were able to resolve the issue.

We understand that the activation process may have caused some confusion, and we sincerely apologize for any frustration it caused. Your suggestion is valuable, and we will ensure to update our documentation and guides to make this process clearer for future users.

If you have any further questions or need assistance, please feel free to reach out.

Hello,

Thank you for reaching out, and we apologize for the inconvenience.

The error you’re facing is due to the missing or disabled mbstring extension, which is required by the mPDF library used by the Challan plugin. Steps to Resolve:

1. Enable the mbstring extension via your hosting control panel (e.g., cPanel or Plesk) under PHP settings.
2. Ensure PHP 7.4 or 8.0 is in use.
3. Reinstall the Challan plugin after enabling the extension.

If the issue persists, please provide your PHP version, WordPress version, and active plugins list for further assistance.

Best Regards,

Hello Michal,

Thank you for the update! We’re glad to hear that the solution resolved your issue.

If you have a moment, we would appreciate it if you could share your experience by leaving a review on the plugin. Your feedback helps us continue to improve and assists other users.

Please don’t hesitate to reach out if you have any more questions.