You can backup KeyTik profiles using cloud storage like OneDrive. Profiles are not big so they will not take too much space even if you use the free plan on OneDrive. To backup, you just need to put the entire KeyTik folder in your OneDrive folder. That's what you can do for now.
We are also planning to implement a feature to change where the profiles will be stored. This way you won't need to put the entire folder in OneDrive storage. Instead, you'll just need to set the profile storage location to your OneDrive folder. So, stay tuned for it!