Hi @rucativava,
The waiting notification that pop-up, notifying you that items have been unable to sync for a “prolonged period of time” are considered “Urgent notifications”.
For the waiting and not allowed app notifications/banners (or "toast notifications, as they used to be called) which are the passive Windows native notifications, there isn’t an option to turn them off in odrive. If you don’t want any of these (not recommended because you can be unaware of sync issues), you can disable them in the Windows “Notifications & Actions” section: