It is error
ERROR: STEP: eBay Sync initializer: ERROR: STEP: eBay Run Batch Marco : ERROR: Cannot insertt the value NULL into column 'SalesTax', table 'enquiries40yourworkerscouk.dbo.OrderItem'; column does not allow nulls. UPDATE fails.
Cannot insert the value NULL into column 'fTax', table, 'enquiries40yourworkerscouk.dbo.Order'; column does not allow nulls.
UPDATE fails. The statement has been terminated. The statement has been terminated.
I have tried removing and adding the eBay account from channel integrations to no avail
I can see you have already been replied with a resolution for that problem in a support ticket, please let us know would you see any other issues with the local sync.