Pick SHA extra plus hotels from booking sites and make reservations directly through the hotel. Most online reservation services don't have the one airport pickup and two PCR package. This also assures you to get approved quicker bcz it is now the hotel staff who approves the initial documents. And buy insurance from a company in Thailand. They may reject you if buy from abroad since insurance companies abroad may not pay you if you get hospitalized by the hotel without a symptom.
Bangkok, Singapore.. Same thing everywhere now. If connecting flights are not booked as a single product from a single airliner's website, you won't be able to collect your luggage. You are unlikely to be able to start the journey if you don't have proper documents for your first destination. Using aggregated reservation services to make a transit is risky right now.
Currently, these international services do not offer two PCR's and the special transportation from the airport to the hospital and the hotel because of the new Day 5 requirement. You might wanna reserve directly with the hotel by sending an email. Most online platforms are not ready to deal with the new scheme yet except for a very special one that has an arrangement with hotels.
My pass has been rejected. They accepted my insurance I bought outside Thailand last time, but I think you need to buy insurance from a company in Thailand now. If you test positive, you must get admitted to the hospital that the hotel is connected to and pay 10,000 baht per day. Good luck.
Cheap method of extorsion. Pay $3000 and get locked up for 10 days if you test positive. Many people will test positive with new variants. Tourists have a choice of other countries. What about the people who live there?