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Since their Android app still tries to download the 2018 data (until it fails) instead of just getting at least the useful data (in reverse order by date) so the user can see what's most interesting... don't be surprised of anything, okay?
Just because a system is badly designed and is implemented just as bad, it doesn't mean you have to start everything from scratch just because of the Brexit. If they would have to rebuild manually all their database again with everybody's info it also would mean they can't report anything if VISA or any financial/tax services would subpoena them.
Yeah, the app is crap, it lags, I have to close the app after I make an exchange because if I let the app open it will never allow me to deposit the amount on card, I can't send funds from my BTC address to bc1 addresses but somehow it still works.
The reason for them asking about docs probably is triggered by something else, suspicious bitcoin deposits, suspicious payments flagged by really bad calibrated filters or something else. Btw, I haven't received anything from them and I did use the card outside my country and I even funded it once from a chipmixer deposit (don't ask what was in my head at that time), so dunno what their plan is...
I have loadet the card with LTC but now I want it back and do no more business with this company because of incompetence.
How can I get my LTC back?
So they don't allow you to withdraw the coins or spend the funds on the card?
Well, unfortunately, nothing we can help you with, just contact them over and over again...