Some ProtonMail secure email users have reported issues receiving emails from Ebay that are sent to @protonmail.com email addresses. After a thorough investigation, our technical team has concluded that this is a bug from Ebay, and not ProtonMail.
If you are experiencing this problem, we highly encourage you to file a complaint to Ebay so that they will fix this bug. It has been present for approximately 2 years, and perhaps has been ignored because of ProtonMail’s contentious relationship with Ebay’s sister company PayPal.
There is a workaround to this issue. It is possible to receive email from @protonmail.ch accounts.