The app continues to work normally.

We are glad to tell you that this incident is resolved.

The Ecwid mobile app for iOS is back up.
We are monitoring the results — you should be able to log in to the app and use it normally from now on.

It appears the problem is related to Facebook iOS SDK: https://developers.facebook.com/status/issues/1739188102911114/
We are looking at how to make the app work normally again.

This message is for the Ecwid iOS mobile app users.

Currently, on some iOS devices, if you try to launch your Ecwid mobile app it will fail to open.
We are urgently looking for the reason and the fix. We will post updates here.

Note that you can log in to your Ecwid merchant account normally on the desktop version at https://my.ecwid.com
All your store data remains intact and customers can place orders in your online stores normally.