Yes, of course you can! You'll need a desktop license to use for your logo or other print designs! If you want to use on your website you'll need a different license.
Yes, one license is valid for one device/user only. So if more than one person wants to use the fonts you will need multiple licenses. I'm not the font police and there is no way I could/would ever know so just going on scouts honor!
While we don't offer returns on digital products, we're happy to discuss with you further to work something out! Reach out here!