You have come to eBay's board of community experts. If you had explained what the problem is instead of just asking how to contact eBay we could probably have saved you the need to.
There is a link to contact eBay on almost every page, or see: https://www.ebay.co.uk/help/account/contacting-ebay-customer-service/contact-ebay?id=4379&st=3&pos=2... You may need to be patient. Customer Support is overstretched and during the pandemic may be limited to callback or live chat.
Before you contact eBay, have you tried searching eBay's help pages? These can answer many of the usual questions, see: https://www.ebay.co.uk/help/home
If no success, let us know what the problem is and someone here will probably be able to help you, and usually much faster than eBay will.
