do a search for "disappearing buttons"..I was very fortunate to have it never happen for a long time when many were complaining ...well last 3-4 weeks I've been plagued by this problem ...it's inexcusable really, frustrating and debilating. Party software sucks remember. IF I could play at any room just for the software it would PokerStars and Ultimate Bet.
This is a known issue and Party should have fixed it by now permanently
Disappearing buttons
in general it seems to me that of all skins EuroBet has more latency/connectivity issues than Party or other Party skins. An inordinate number of EB players have complained about this issue.