You didn't answer my question but instead give unwanted advice.

Le meilleur conseil à vous donner c'est de contacter le service client.

That was my first option but no customer service email address was offered but just now I attemted their option of contact through telephone but got the following message at 10:30am California time when they should have been open:

Postez sur ebay.com :

https://community.ebay.com/

Going round in circles - I've now posted 4 times in the eBay Community which includes this message to you.

Sauf qu'ici on est sur le forum ebay France : aucune possibilité, quand bien même ça vous énerve, d'aider un Thaïlandais dépendant d'ebay.com...

If that's the case then in due course I will open a new eBay account in the UK or US

For your information I'm not Thai but British and living in Thailand.

aucune importance : vous êtes enregistré en Thaïlande au niveau du site, ce qui revient donc au même.