TX134 Transmitters

I purchased last year 202U receiver and 10 Transmitters model TX134 . This year the receiver got damaged due to water flood so I had to purchase a new one with an extra 6 Transmitters in addition to the 2 that came with it. I was able to program all the new transmitters that I purchased this year, however I was not able to reprogram the old once even though they are all the same model (TX134). Kindly advice

Maybe the old remote is bought with V5 receiver?
If so, it doesn’t work with new receiver.
Thanks.

The change was made in late 2019, about 2-3 years ago.

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