Hi folks!
GiveWP has released version 3.5.1 of the core plugin. It fixes the issue of PayPal Donations not being able to connect.
The issue was that PayPal had changed something on their end and not notified anyone of this. After collaborating with PayPal Engineers, GiveWP and PayPal found the issue and the fix.
Before taking any steps for troubleshooting or updating, I highly recommend taking a good backup of the site you can confidently restore from. Having a backup of your site is essential to a solid workflow, and will allow you to restore to a previous version of the site if you run into any issues. You can read more about our top recommendations for taking a backup here: https://givewp.com/backup-for-faster-troubleshooting/
Then, update GiveWP to version 3.5.1 and connect to PayPal. On some servers/hosts you might have to clear all the cache in both plugins and in your hosting account.
Let us know if you have any issues and we’ll assist you. Have a good day!