Hi,
Due to a bug in the previous/initial sim version, we couldn’t add airports that do not exist in the stock data, like LTFM.
This bug is fixed now with SU1, and with the next AIRAC 2503, you can also select missing airports (ex., LTFM) directly in the sim and use it in the EFB too.
Here from the upcoming AIRAC 2503:
I hope that helps
Richard