When I had mine I got issues like this (sometimes module cut out), it was due to slop between the module card and transmitter pins that require a good connection to work properly.
I would advise to take a look at the pins and align them back together then mount the module back. Should work. Check if module got slop in the case, put tape or foam to avoid it.
After a while if removed often you will need to slightly bent the pins up or down, still align, to create some tension for contact.
Once set it will hardly move, check now and then.
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