when I delete a task or an appointment on a em client on one PC syn doesn't work on seconde Pc on em client

Sync for deletion appointement or task doesn’t work but it work when I create appointement or task.
same problem with exchange account and google account
I need to use repair and it’s ok after
I have two licence pro

This is a known issue and is supposedly fixed in 7.2.37929. If you are not using the latest, you can download and install it from the Release History.

If that does not work, as a Pro License user, it may be best for you to open a support ticket directly with eM Client. To do that, in eM Client, click on Menu > Help > Get Support. They will be able to assist you further.