I can see that it’s getting what seems to be the correct driver (8812au) and successfully connects to channel 6 (2437 MHz).
It might be worth installing CRDA at this point:
sudo apt-get update
sudo apt-get install crda
Then edit /etc/default/crda and set REGDOMAIN=ES. Save and reboot.
You need to be sure that 2.4 GHz and 5 GHz have different SSIDs. Then run
connmanctl
scan wifi
services
If that fails to see 5 GHz, try to connect through ethernet cable, reboot and repeat the wifi scan. You might also need to run enable wifi in this case.