Are there problems with the OBDII system on 2019 Forester not communicating?

Hello, there is a fuse for OBDII data link connection. I looked in the workshop manual information and can't find the fuse listing. So, I'll suggest you check your owners guide. Some manufacturers tie in the data link fuse with the circuit for your power points / lighter sockets / USB ports. These can blown fuses due to plug in issues. Check fuses first, it's the most likely cause of concern by far. Alternatively, see your local Subaru dealership for what is likely an in-warranty situation unless you have a ton of miles.