I f**** solved it. In your aapanel, you have to go to security > ssh safety > login method
Enable both options (password login and key login) and it fixed, but I think you only need to enable key login
After that my QR code appeared normally
Simple step that should be in the tutorial!
note: 2 steps that is not in tutorial.
in security, you may have to open port 8000 for the folder wa_server (waziper or whatever you named it)
in cron, you may have to config the cron: Shell script, waziper, N minutes, 1, sh -c 'cd /root/waziper && node app'
more details, msg me in telegram +5521981238678
I'm making a group for doubts about waziper, because the support takes to long to answer and this forum nobody posts resolutions