Oh wow, Mari, that dropdown ghosting u is such a pain, I can imagine...
First, make sure u're using the right portal link (so many people miss this!) https://portal.customtranslator.azure.ai
If the region dropdown is MIA, try hitting F12 and checking the console for errors. Sometimes a single failed API call breaks the whole page. Aha! double-check that your Azure Translator resource is Standard S1 tier or higher. The free tier won’t cut it for Custom Translator. https://learn.microsoft.com/en-us/azure/ai-services/translator/custom-translator/overview
Try Edge (yes, really). Sometimes Chrome/Firefox get weird with Azure portals.
Log out of Azure completely, then log back in fresh. Session glitches happen.
If u have a VPN, turn it off. Azure can be picky about geolocation.
if all else fails, just recreate the Translator resource in a different region. West US usually works like a charm ))
Let me know if the dropdown still hates u
Alex
and "yes" if you would follow me at Q&A - personaly thx.
P.S. If my answer help to you, please Accept my answer