Also: I clicked the battery alot of times, and it wouldn't rejuvenate.

the one in the mail to renew my account. I thought it was a useless and didn't expect any response from this approach so I threw the letter away

Here is the mail:

[CleanVoice] Free Mumble Server (removed)

Message body

Your Free Mumble Server has expired and it was completely destroyed :'(
It can be recreated in any time http://cleanvoice.ru/free/mumble/en.html, but if you want to be happy with it for a longer time then you should to recharge a battery from time to time!

If your server worked not properly or you haved any strange issues - please, contact our tech support support@cleanvoice.ru, we are interested in a good quality service. Thanks.

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Yours,