Listing not Displaying, no Amazon Node Attributed

Hello Folks
I have been going round in circles for a week now. Spoken, emailed and chatted to Seller Support. Keep getting generic we will get back to you within 48 Hours, we are looking into this.
My ASIN is not showing on Amazon despite my end showing correctly.
Currently my item is showing under Department - Everything Else which means it is not discoverable under the node I had sent and used for the past three months before last Sunday.
Has anyone any advice or if you have had the same problem how was it resolved?
I have stock FBA in Amazon UK, used GS1 Barcodes then Amazon FBA barcodes, have completed and had my product HAZMAT approved since I launched in April.