Have you tried cleaning the contacts on your reader and card?
Sounds like the card has missed the activation.
If you definitely have good signal strength and signal quality, it could possibly be contacts as above, faulty card/decoder.
When they sent the reactivation... was your decoder tuned to that channel at the time?.... If not, it may have just missed the 'hit' when it was sent.
Check/clean the contacts and request another over the air reactivation, making sure your decoder is turned on and tuned to that channel.
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