GUILD -Microtransaction coins donation not working

Hello,

I created guild CZ/SK few days back and invited my friends to join, since there is no free guild stash i bought first premium tab and asked friends to also donate some gold so we can buy all tabs. They started sending me messages that they donated 100, 150, even 600 coins, but the ingame UI shows nothing. I though its some temporary visual bug, so i donated some more myself and bought another tab, but even after that it still shows no gold. Is it something u guys are aware of ?

Thanks for response,
Scry.