Can't update my Ebay email address

After about 20 years without issue, suddenly stopped getting Ebay email notifications eg Watch List items, tracking etc Nothing has changed at my end - filters, spam etc. So, I tried changing my Ebay email address but don't get the confirmation email (using existing or new email address. My email provider says no issues with incoming Ebay mail on their servers.  Last week I got a dodgy looking email (not from Ebay; hello@anotherway.lt ) about my email address expiring 'in 48 hours' and it needed reconfirmed (ignored). Anyone any ideas? Thanks.