Thank you for your message, and my apologies for the inconvenience. If I already had the exact solution, I would gladly share it with you so you could apply it to all five sites yourself. However, at the moment I’m not fully sure what is causing the issue.
If you can provide access to one of your sites, I will fix the problem there first. Once it is resolved, I will explain the solution in detail so you can apply the same fix to your other installations without needing to contact us each time.
Please let me know how you would like to proceed.