HELP : Is support@protonme.zendesk a legitimate Proton address or a potential phishing attempt?

Peace be with you, Proton Community, 🌹

I was trying to find out which search engine Lumo uses in the background. To do this, I used the official contact form here: https://proton.me/support/contact?topic=lumo.

Unfortunately, I later realized that the official site lists "proton*mail.zendesk", not "proton**me.zendesk"*. The domain "protonme.zendesk" looks suspicious, and many sites online report it as a phishing attempt.

I have already taken security precautions on my end, but I want to be absolutely sure before I report this domain as malicious. Has anyone else seen this? Please let me know if you think this is phishing. And i hope you can answer my question about the search engine 😁

Thanks for the help.