BuyFromEU

yes:

• Notifications sometimes don't work, like you would get notifications about new messages only a couple of minutes after you opened the app and not before, so you can miss several months of a group conversation (it is possible that this can be adjusted but i did not find the option in the settings that actaually solved this problem)
• the calling function does have 5 steps (why? i don't know) to eventually establish a connection and mostly doesn't work. And in the rare case it works the connection is not even that good. Like there are frequent interuptions so you would miss every 7th to 10th (or so) word the other person said