Contact Customer Services through the link below, it seems to be only an automated chat no Call Back option if using a desktop browser, but others have found a Call Back option on the app or mobile browser.
https://www.ebay.co.uk/help/eua?id=5190
Or, it might be quicker and better to come back here, explain the issue you're having, many experienced people here, happy to help.
@raffaeli-72
