Just some advice: for anyone wishing to renew a visa and is in Bangkok or chiang Mai and having problems... There is a small town which is also worth a visit for a couple of days 6 hours by train or 45 min flight called Phitsanulok.... I did my renewal spontaneous while I was there and it was super easy and straight forward. They don't get many foreigners even before covid so very friendly service and efficient.... Might be worth looking into and visiting the town... People super friendly and a nice little hidden gem...
Edit: this was a tourist visa 60 days and I was staying at a hotel there for 2 nights.