Same here with Agoda. Duplicate booking as the first attempt was"declined" using PayPal. Then I rebooked the exact same room with a credit card. Then I found out about the double charge. Hotel told me to contact Agoda. No reply yet. PayPal will "check with the hotel". Both PayPal and Agoda are risky.
I'm in BKK and want to go to Cambodia for a couple of weeks as well. Cambodia is easy enough but coming back to Thailand is a real hassle with their 2 quarantine PCR tests. Such a nonsensical requirement.