I think the pandemic caused and increase in the gambler numbers everywhere, which affected bitvest as well. That could be the reason why gambling was slower recently. Think about it, normally lets say 50 people gamble all at the same time, when you go up to 100 that is usually not really a big problem, sure you feel the slowness a bit but not big deal, but when you go to 200 that suddenly cripples the servers a lot.

Hence I think there must have been a huge increase in gamblers at bitvest during this period of lockdown that caused the servers to be a bit more slower than usual. That is my idea of course, maybe there is something more fundamental that needs to be changed that I am not aware of and maybe it is more crucial that has gone wrong with the website, I wouldn't know.