TT15 not pairing with Alpha100 after deletion from the list

[jocanedd]

I have an Alpha100 that was paired with a TT15 collar. I accidentally deleted it and now there is no way to add it. I tried with two other Alpha100 and one Alpha200 and it won't work.

Only the Astro320 pairs and sends data normally

I also tried Master reset and all possible firmwares

T5,TT15_230.rgn
T5,TT15_250.rgn
T5,TT15_300.rgn
T5,TT15_310.rgn
T5_TT15_470.rgn


the Alpha100 pairs with other collars without a problem

so, it worked normally until I deleted it and now I can't add it at all

Has anyone had such a problem and knows how to solve it

Spoiler: images

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