The site looks completely normal to me. Can you elaborate?

does it? it worked fine at the beginning... like 7 years ago? i played it in a browser back then. i got fed up because for further progress i had to pvp or pay and i wanted neither, so i quitted. that was ok and i had no grudge. but, 2 years ago or so i saw it on steam and thought, lets try it again, lets see how it developed. and i wanted to sign into my old account. i tried over and over again, changed password over and over, but it still did not let me login. i mailed them and told them to do something or at least delete my account.
then, like one week later, i got spammails. and i had none up to that point before, and it was even before corona times.

I'd say it's more likely any potential breach would be from your ISP or email service, rather than Desert Owl Games. I have no idea how email security works, but I'm assuming you haven't sent many from that address before: it's basically impossible to avoid spam from any service.
The devs got surprised by some higher management abandoning the company and leaving them with no future, but I'm sure Senshu will get to your email eventually (2-4 days, in my experience). The game will still be running for the foreseeable future, when you inevitable do get back in.

the 2-4 days deadline has expired over a year ago. and even if for some miraculous circumstance i suddenly would receive an answer, i wonder what they possibily could write that would make me change my opinion on the company or the game.
u are right in the matter of the possibility that the breach could have been from the mailprovider itself, or maybe from somewhere else, even tho i am no app- or accountcollector and rather rarely register somewhere. but, the timing is suspicious, isn't it?