I don’t think you can install the new kernel on Max2Play but for some reason they will not offer a new image based on the new kernel for download. Maybe if enough people complain they might finally update it.
I was able to install the new kernel because I didn’t use Max2Play. I installed Raspbian Buster instead. If I were you I would try PiCorePlayer until Max2Play sort themselves out. They know about this problem but will not address it.