LIVE UPDATE September 25th 6:00 pm EST:
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We're glad to inform you that it now seems that the maintenance is over and our server is back. All issues should be now solved.
Since the update have been seeing the license key has expired error when putting in my key. Lifetime license holder for a while, tried reinstalling CF and memu both already. Quadruple-checked the key.
Don't know what happened, but know you guys will be up and running in no time. Thanks for everything!