I'm very sorry to hear about such feedback.
We are always happy to honor our guarantee as per the terms laid out fully below:
https://www.host-stage.net/money-back-guarantee-terms/
Regarding, the cryptocurrencies there are indeed legal ramifications which we raise to our accounting company during each yearly HostStage general meeting. Progresses are being made by the French National Accountant Order (Ordre des Experts Comptables) on how to deal with Cryptocurrencies but lawfully there are some ramifications as it isn't yet acknowledged as a currency and if they do, the main question would remain: Would it concern all the cryptocurrencies? and if it wouldn't be recognized will adapt the process.
As detailed privately, i'm willing to accommodate as much as possible and you may update the ticket to benefit from free month gesture. Once again, we value a lot our clients and I'm very sorry to read such