Unity freezing android apps on unity personal 2019.1.8f1 splash screen

Hello, everyone!

I've made a couple of searches on the forums and it seems that this bug appeared on 2015 and 2017 but since I could not find any thread for version 2019 I've decided to post a new one. It seems that the bug is the same as the others, the user start the game but the unity splash screen do not fade away and the game start running underneath it, weirdly it only happens on certain devices and im not sure what exactly are the diferences between them, they were both running android 9, both have plenty of spare memory and were installed in the internal memory, not in any external SD card.

I've tested it on my android Galaxy s7 and it runs perfectly so now I really need help in these since the app is already built and published and im getting some nasty reviews because of this problem, and worst of all, they can only see the ads from Unity Ads.

So ty for your time and attention and sorry if im doing something wrong I just don't know what to do anymore.