Sorry if this is somewhere else answered already, but i checked a lot of threads and used google for other places but simple cannot find solution or what is causing the issue. I have the same issue on three different devices - Samsung Note 8, Samsung Note 10+ and Chinese Multimedia with 9". All three devices have Android 11. I cannot figure it out if Android 11 causing the issue since i've installed same versions on other Android 11 without issue. I have Samsung with Android 11 and tried all this on mine and works without issue. Really strange.
So the issue in all three items is that after installing the apk iGO Nextgen loads but it is stuck on "download finished" window and app freezes. If you force close open again it have only black screen. If i remove save and clear cache data uninstall and do everything from beginning its same scenario. I tried iGO Basar 9.18.27.736574 - 13.jun.2018 (which works on many devices), i tried iGO Gift 9.18.27.687519 - 26.jan.2017 as well and i.B.9.18.27.736574 - 13.jun.2018.
It was strange with Note 8 when i installed i.B.9.18.27.736574 - 13.jun.2018 on internal (iGO_Basar) was successful, but when i added after that all the maps the app was force closing i solved this with installing first main files in internal and all maps on SD.
I cannot use this scenario on other two items because they dont have external SD. Does anyone have this issue its very new (probably caused with Android 11 on some devices) and is there any known solution?