I've decided to use the cloud base N8N and maybe switch to self hosted. Am I good?

When getting the client keys from ghl and pasting it to n8n which i executed perfectly. The going back to markeplace on GHL, i tried saving all the info, I'm getting the error message "RedirectUris must contain at least 1 elements". Is this normal? Do i just ignore it?

Regarding the first video..at around the 6 minute mark, the video freezes and unable to follow what he did. Can anyone provide this information? I'm stuck.

Hello people, I've opt in for the cloud version of n8n, do I need to switch it to self hosted? If so, how? Also in terms of resources, do i need to download all of them and import the files to one flow? Or just pick one for now?