I had to change my password again a few hours later after I changed it with CS as I couldn't sign in to the discussion boards again.

I will post the following for anyone else who can still read the boards but can't sign in.

To contact CS about this:

Go to Customer Support - in search box put "Technical issues"

Click on " I want to report an eBay technical issue or site bug"

Which takes you to " Technical Issues" At the end of the page it says "was this information helpful? Yes No. I chose No - other - send.

At the end of the next page it then says this in green font.
"Thanks for your feedback! For customer support, click the Contact eBay tab above." Click on "Contact eBay" in that (in blue font).

Then click on "Call us" . It also gives you a one time passcode, to use for faster service.