i have a problem

i am using KWGT on a redmi note 10s (xaomi) and i would Like to change the icons of my phone to a different pack called "whicons".
this Is the link to the tiktok which i am following for the tutorial: https://www.tiktok.com/@chillrogg/video/7115505755104562475?_t=8UDwhfuslK1&_r=1
when i do "pick image" It shows me a different file screen but then i managed to get where he Is when he does "pick image" but in the app list i can only see the Google drive ones.
i did the exact same thing at 2 of my friend (Oppo/samsung) and It works for them so i think its a problem for the xaoimi.
can anybody help me? :)