Welcome back Calviղ! Thanks for marking this "not a question" we will try to be patient with q&a as we know this was a difficult experience for many members. That being said we will be marking these mfd after a short period of time.
I was on vacation - I kinda missed this:
I didn't know what happened;
Where i was camping at there was Wi-fi by the beach, so as usual i go to the beach almost every day (while i was camping). And the one day, i see the wifi was on, and the other apps (youtube, google...) work, but Sololearn says No-connection;
I thought maybe Sololearn takes stronger wifi connection. I tried everything, but it wasn't working.
So i didn't know this App issue happened .