I was notified about this response, so seems okay for me. It may be a problem with email deliverability with your provider. I notice they use Sendgrid to send t

I was notified about this response, so seems okay for me. It may be a problem with email deliverability with your provider. I notice they use Sendgrid to send the mails, so if your address is on a commercial system using Mimecast or a lot of popular French email services, say, then you're probably out of luck. Sendgrid IP ranges seem to have a poor rep at various places, annoyingly. (Edit: I note you're on Protonmail, which doesn't usually have a problem, but might be worth resubbing.)