Incorrect sync to Strava

I would contact Strava support. Currently they do accept tennis, so some racquet sports are possible. Meanwhile, you can edit the activity in strava.

probably the garmin's squash activity type is not equal with Strava's squash type (probably only the basic sports are synced good, i mean ride, run, walk, hike but the "unique" sports are not, they are not standards). you need to go into activity details (on Strava) and modify the activity type from workout to Squash

i was curious so i recorded a quick Squash activity, and checked the FIT file internally , the result:

= TYPE=14 NAME=sport NUMBER=12

--- name="Squash"
--- sport=64=64  
--- sub_sport=94=94

so, the sport=64 which is "Racket"  , that is an older value so the Strava should know it BUT,

the sub_sport=94 is the "Squash", but in the older FIT SDKs it is not available, only just a few racket sports with 8x values,

so the problem is the Strava is using an old FIT SDK and they cant sync any Squash activities (recorded by Garmin devices ) to their own "Squash" profile, and this is the reason why if the sub_sport value is unknown for the Strava server then they sync it as "workout" and thats all. 

Probably there are other sports also which have new sub_sport values and the Strava still dont know it . Similar the situation if the Garmin release a new product , but the Strava dont update the FIT SDK , then the Strava dont know what was the recorded device and this info is missing on the details on Strava.

So You need to write an email to the Strava to update the FIT SDK to the latest (it is 21.126 now) on their server side because the newer sub_sport values (like Squash) are not synced properly to Strava . When they update it, immediately your new Squash activities will be shown on Strava as Squash also.

Luko79 thank you SO MUCH for taking the time and checking this. I am already in touch with Strava support and I will pass your expertise onto them. Once again, really appreciate your help!