Can’t do anything

Hi !

I created a schedule for reservations, I did tests and everything worked.
I made changes in the tabs and since I do not have the form as before, I can only choose a service and nothing happens
I tried to delete the extension (accepting the message to delete the data) and when I re-install the extension, I still have the data saved and I still have the problem … How?

Sorry if my english is bad, I used translator…

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