Xiaomi Mi5s installation error

Hello,

trying to install Ratio Pro on a Xiaomi Mi5s phone, I got the error below:

thanks,
raul

Hi there. Welcome to the community.

Can you please provide more details about your device?
And have you given all the required permissions which are asked?

Hello,

Thanks.
yes, I followed step by step all the instructions. I am in developer mode and I have activated USB debugging.
I have Android version 8.0.0 and MiUi 11.0.2. CPU Snapdragon 821 Quad-Core Max 2.15 Ghz, RAM 4 GB
What other info would be useful?

LE: just got a more detailed error when I tried again.

thanks,
raul

Hi there. Ratio needs Android 8.1 (SDK #27) or above to work.

Thank you for your help.
Much appreciated.