Tried this but I can't get the activation e-mail to send. I was able to post something in the "Off-Topic" forum and clicking the privat emessage button just takes me to my private message screen.
Is your account already activated with another e-mail account? If it has, your account is already activated even if you change the e-mail address.
If your account has already been activated and you are able to post you just need to change your e-mail address in your account settings to
your hotmail/outlook.com address.
An automated e-mail from the LibreELEC forum will confirm the change if [email protected] is in your safe senders list.
Try changing your e-mail address in your profile to your Hotmail/Outlook account on your LibreELEC forum page to see if it works.