Just so you know – you didn’t need to do that. Syncing your deck through AnkiWeb to desktop Anki would have been much more efficient.
But that won’t help you with your main issue now – so back to the point!
Since you’ve already checked all of the relevant settings, this is probably about the order of your newly created cards in the New-queue, but it might be related to your note type.
Looking at the note type first – it sounds like you’re using the default “Basic (and reversed card)” note type, so Card 1 is Front → Back –
Is the Front field where you have your Thai words? If not, this could be as easy as re-ordering the card types.
If that is already set up correctly, then take a look at the Switching Card Order video – Card Templates - Anki Manual – it’s the old interface, but the 2nd half of the video explains how to use Reposition for newly created cards. You want to get your new New cards set on the same New-queue numbers as their siblings, and Reposition will do that automatically.