Sorry you got some mixed info there.
AT THIS TIME <- meaning right now, at the immigration offices across the country there is NO CHANGE to the insurance requirements for O-A visa extensions.
You need a new yearly 40k/400k policy from one of the approved 18 thai insurance carriers.
You cannot use your own insurance 😕 You MUST use one of the approved 18 carriers on this list for the O-A insurance
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