You should always turn of autofill off, when making a visa application, and many Thai embassies write that very clear, as the LA consulate:
“Visa fee is non-refundable, please double check all information before submitting, especially if your device is using auto fill or auto correct. Mismatch information will be rejected as the officers are not able to edit any information entered by the applicant. Applicants will have to re-submit and the Visa fee is non-refundable.”
Always write the data excactly like in the machinereadable field, at the bottom of the picturepage.
All Embassies have the right to call you in for a interview, so best to stay close to the Embassy you will be applying at, until the visa has been processed.
Every houseowner / landlord is by law commited to make a TM30 within 24 hours every time a foreigner stay at their premisses.
Every foreigner staying 90 days in Thailand, has to file a 90 days report, first time in person at Immigration, after that possibel to do it online.
(A TM30 is needed for the 90 day report, and the easiest way, is to ask the houseowner to make a copy when they file the TM30, so they not have to search for it 80-90 days later.)