I don’t think it is the batteries because of all three not working. It is probably the alignment of the sensors that won’t allow the door to close or open if something is in the way. I have sometimes, maybe three in nine years, had to make sure the sending unit for the opener, it is on the floor at each end of the door, points at the receiving unit. Just bend it a little until it works. It is not hard to do and you don’t need to pay anyone.
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