Hello Imservan,

Thank you for reaching out to us.

We have seen similar issues with some of our other users due to dynamic caching on their hosting.

Could you please either share your cPanel access with us or temporarily disable dynamic caching and let us know if the issue persists?

Thank you, and we look forward to your update.

Hi, the tip about dynamic caching inspired my provider to check the cache settings in Sucuri and switch them to website caching (using your website's headers). As a result, all three shop systems are working again. Thanks a lot for your help. Best regards, Imservan

It’s great to hear that your issue has been resolved. If everything is working fine now, please mark the question as complete by accepting any of our answers.

Thank you!