why i can’t download advance server?

I have been using taptap since it was not even in proper English, barely anyone knew it exists back then and it was great compare to another app, you could find many games that didn't existed in play store and it was all about just downloading the games, It has has been almost 2 years now, tap tap quality is just going down to drain, The app is just unoptimized horrible with so many unnecessary icon with so many unnecessary bullshit on the screen that it feel like I'm using some kind of a hidden social media app, it's not about gaming that much it's about testing new beta games, I have no problem with the beta  testing games, but man there is a limits and deciding what this app is about is something I don't think even people who are running this app know anymore, It doesn't even know it should be a Android app or it should just become a cheap version of steam, Even with all this unnecessary console and PC gaming garbage I am force to see every time I just want open this app, still I ignore all the,,