"I have also tried contacting ebay support but can't get through as I receive this error message:

"Something went wrong. Please try again later. You can also get more info searching online help- online help, or you can contact an agent."

On the off chance you're trying to reply to an eBay message, check the bottom of the message and make sure it doesn't show: " Please don't reply to this message. It was sent from an address that doesn't accept incoming email"

Likewise with emails  from  no.reply@ebay.com

Try again in working hours .

Go to eBay Help at the top of the page and when you get to the automated assistant, ask to speak to an agent