If they are asking for more verification? It means your account is not verified. In Thailand I find it best to use their Australian customer support because it's open when we are awake.
I opened a friend's account for him last week and we transferred 700,000THB within 30secs to his Thai account. I transferred over 45,000USD to Thailand Sunday again in minutes.
You must be doing something wrong. Here's the Australian Wise Support number.
Book an hotel first for 5 days. You need to see the apartment yourself. This is so you can check the neighbours out, plus broadband, electric rates which vary from 4.5 to 12 Baht per unit.
So get off at BKK taxi or bus to Jomtien hotel. Facebook marketplace. Also you could head to the Wombat and Kiwi Bar. Loads of good expats in there. Most of them rent locally.