According to the dot ca status page there are presently issues for signing in. eBay is working on resolving the problem.
For anyone who is having this problem wouldn't that error message ummm be redundant or difficult to spot if you are unable to sign in?
22 Jun at 3:30am EDT
We are aware of a service disruption related to Sign-In, and are looking into the situation. This page will be updated as we know more.
The system status pages for all major eBay countries/sites are still showing the service disruption for Sign In as of 12 PM Eastern June 27, 2022 and there appear to have been no further updates indicating when the issue will be resolved.
Are you experiencing problems logging in to eBay? Let us know in the comments below.