Lr not importing and not previewing

I am having issues with my Lightroom for mobile v. 3.5.2. I have an Android Galaxy S8+ and I have been subscribed to the premium version since a month today. I have been having issues since 2 days ago.

My pictures won't import anymore, save and can't even  preview old pictures. I can work on my old pictures but can't save them. It's like there is a problem with the server or something. There is no data coming in or out...

Help!

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