1 session means you can have 1 client running the bot.
It doesn't look like BTC is accepted through standard payment methods, but maybe you can contact support and see what they can do for you.
Everytime I launch Updater.exe it fails on downloading the update. It starts and fails after a few seconds of downloading the file.
I reinstalled all redistribution. Disabled firewalls, disabled antivirus, forwarded ports... everything.