With the last version I have notice that in some case I haven’t the metar button for the airport in the flight plane. The same metar is available on web or in other app. Is a bug?
The version of android app is 8.40.1
Without seeing the METAR information I cannot confirm, however if the winds velocity is variable (<3kts), the crosswind values will not show.
Next time you notice this icon missing, check the METAR reported winds. If they are above a variable report (VRB), please do let us know and we can investigate further.