Per information here: https://proton.me/support/zendesk...

My understanding is there is an explicit preference from the Proton support team to use the contact form (proton.me/support/contact) for technical issues.

However, the form does not support any file (e.g. screenshot) upload. In 90+% of cases, this seems to pretty much guarantee additional lag-time and back & forth to address any ticket.

Feature Request: support file (at least image) upload in the contact form.