Why is my eBay account saying it's already in use?

I tried to connect my shopify with eBay but the error message appeared below. I contacted shopify, they said it is ebay. I contacted ebay, they said shopify has to release it. Can anyone help?

“The eBay account is already in use with the Shopify account premier-colour.myshopify.com. Please use different eBay ID or disconnect from premier-colour.myshopify.com.”

Considering submitting a request to the Shopify’s eBay app support team:

https://connectebay.zendesk.com/hc/en-us

They manage the ebay app on shopify.