I only play this game for fun, I can still dominate in matches even though I've never spent any money on the game. Issues with accessing the game usually happen when major updates and changes are happening, so I think it's kind of self explanatory. In the mean time, while waiting for Tanki to complete it's major changes, I suggest learning some code, tech is becoming increasingly popular, so it won't hurt to have some tech skills right? P.S. you'll also be able to solve tech problems such as problems with game connections etc, by yourself. It'll just take some time learning. It's worth it!

Not sure about your issues but maybe try getting them from containers instead of buying them, it saves your crystals too！

Consider this: Tanki is trying to make some big updates and changes this time, this obviously might interfere with gameplay and experience, so I suggest waiting it out. Try watching the youtubers, especially Taspens, he gives some explanations about the game.

I only kept playing this game cuz of hyperspace rounds, but I guess opening containers is a bit thrilling too.

Maybe try accessing the game throw a browser on PC. If that still doesn't work than I'm afraid there isn't much you can do, you can try the solutions suggested by Tanki. If the solutions don't work then I'm pretty sure that is a problem on the server side, or not a problem at all. The Tanki developers are right now trying to update the game interface, missions interface, and augments displays, and stuff like that. So I think its reasonable that the game is a bit unplayable for the time being. I suggest being patient, and spend your time on another hobby and maybe taking a break from tech. Until server-side issues have been resolved, any problems your currently having is most likely related to whatever improvements happening to the server.

WHY DID THEY MAKE HYPERSPACE ROUNDS UNBUYALBLE WITH CRYSTAL???!! The amount of damage you can do with it is insane: triple the damage for any tank you shoot through. now you can't buy it with crystals anymore, only in containers. Like just how many do you have to open to get it?