I’m pretty sure anyone living here has one of the included banks, that they then can transfer with no cost once you’ve deposited into supported Thai bank account (wise still charges for transfer to Thai bank though)
This looks like part of their additional crackdown on IML activities. Nothing really convening
we don’t know what they told you. But to answer your question, you can not work on an ED Visa. You would need to get a new type of visa that allows for a work permit, such as Non-B. Once you enter Thailand on that visa, then you can apply for work permit. Your job should walk you through this or get you an agent to help you.