I am applying for my 60 day tourist Visa. I stay at a small non-commercial muay thai gym where English is not best spoken. I contact them through WhatsApp and reserve my accommodation here. I have heard a screenshot of a WhatsApp message won't be adequate for the Visa accommodation proof. Can anybody give any suggestions of how to go around this? Should I get the gym owner to write me a letter on WhatsApp and put it into a PDF maybe?