Hello @soportecd!
when I add several products it happens that if I have 2, 3 or more products the last one that I am adding deletes me previously added, I don’t know what could be the cause of this.
Have you checked if the issue persists when you deactivate all plugins except WooCommerce and switch your theme to Storefront? I suspect this issue might be coming from some plugin/theme conflicts.
You can find a more detailed explanation of how to do a conflict test here: https://docs.woocommerce.com/document/how-to-test-for-conflicts/
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If you still face the issue after doing the conflict test then please share your WooCommerce error logs and System Status on this thread so we can take a look at your configuration and check the issue further:
System Status: You can find it via WooCommerce > Status. Select “Get system report” and then “Copy for support”. Once you’ve done that, paste it here in your response.
Error Log: Share a copy of any fatal error log found under WooCommerce > System Status > Logs (if available).
Look forward to hearing from you.