None are completely seamless, some still need cash top-up so there is the pricey ATM cash withdrawal fees and forex rates. Others only work with QR codes from sellers with registered business accounts.
Anonymous participant it states that applications will be automatically deleted if not submitted within 14 days. The same goes for unanswered document requests. Nothing official, just experience from observations.
Was it a personal bank account, savings or checking typing account? Workation means you work for a company remotely, but actually you are just a contractor/freelancer? Can you explain your company work relationship a bit? You need a letter stating that you can work remotely and specifically in Thailand. Do you hold a Bangladesh passport? I'd contact the embassy and try to glean exactly where your application failed in their eyes.
likely your application was cancelled, not rejected. Cancelled application it's usually due to biodata error on your main passport page, a rejected application is usually due to insufficient documents.