Gallery doesn′t show photos

The photos are disappearing in the gallery. If I add a photo to a gallery, everything looks fine, but when I check it a few hours or one day later I only see the file names on some of the photos in the gallery. The only way to get the the photos back is to manually delete and add them again to the gallery. However, they keep disappearing again afterwards. It’s currently working on my desktop, but not working on my mobile device. This problem just started yesterday. All galleries were fine before that.

I’m using the most current version of Integration Google Drive Pro – Version 1.4.3.

Is there a solution for this issue?

Thank you for the answer in advance.

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