Hi, I have the capsule max and engaged heavily with customer service before the purchase as I had the exact same need of sky go for our motorhome. This information is several months old now since I bought mines
So, the max is Android versus other products being android TV, the google playstore for access to sky go needs to be unlocked.
Upon purchase you contact customer service, you do an upgrade and confirm the system version via a ticket, you are then added to a ‘beta test’ program and given a password for a download and a special sequence to access the file.
When all is done the version should be V2.0.1042. and you’ll have sky go via the google playstore.
Again, I bought this several months ago so this may now be the standard version, but confirm as other poster that I’ve had several app updates, in fact just tonight.
Hope this helps, create a ticket on their system and you’ll get great help
Jason