Howdy Nikola, Thank you again in advance for helping to resolve the Easy Appointments 'Service' issue. I have sent the details you asked for, and could be that there is a time difference in our communications, but I haven't received a reply as yet. It appears that I cannot save any service added, so I was was was is there any possible method to 'remove the service function'? Although not as convenient, it might be one way to get around the issue. If there is a way, could you please advice me what area of the application to remove (delete)?  I have updated WordPress and all related plugins like Elementor, so the older version of Easy Appointments doesn't appear to function. Thank you again for the amazing appointment plugin. Best regards, Keith