d_greenfield Hello!
Please try to turn the tracker off and then turn it on, if this does not solve the situation, then check the instructions for the tracker, maybe there is a description of similar situations.
You can also try to temporarily install another SIM card.
If the situation is not resolved, then it may be worth contacting the seller or the manufacturer of the tracker and try to find out why such a problem could arise. Perhaps some malfunction occurred during the charging described by you.