Can't install apk even though device requirements are met

[kaiomatico]

Hi everyone, I want to install the dolphin apk on my new Amazon Fire HD 10 tablet which has a mediatek mt8183 64 bit cpu and a armv8l 64 bit os( and Kernel) based on android 9 pie. The mali g72 mp3 gpu has opengl 3.2 and vulkan drivers built into the OS. So my device supports the minimum system requirements but I cannot install the apk. I get the following error:

kai@linux:~/Downloads$ adb install dolphin-master-5.0-11256.apk
adb: failed to install dolphin-master-5.0-11256.apk: Failure [INSTALL_FAILED_NO_MATCHING_ABIS: Failed to extract native libraries, res=-113]

So after some googling it seems that either adb thinks I am not running 64 bit armv8l or the build settings need to be adapted to something like a universal apk:
https://stackoverflow.com/questions/36414219/install-failed-no-matching-abis-failed-to-extract-native-libraries-res-113

does anyone have a suggestion? cpu-z does indeed show that I am running armv8l

[JosJuice]

You most likely have a 64-bit kernel but not a 64-bit userspace.

[DJBarry004]

Also, for instance, ARMV8-L is not supported.

[JosJuice]

Ah right, armv8l is the 32-bit mode of ARMv8, right? I wasn't completely sure what the L meant. That would be the explanation, then.

[mbc07]

Moved to Android...

[kaiomatico]

Thank you everyone, I just checked and yes the userspace is indeed 32 bit, so I was wrong. Sorry for the inconvenience, this can be closed now