Hello, I’m Virginia a fellow Windows user.
If you received any activation code for the app then you might need to re-enter it.
You can also contact Microsoft with the order number here: https://support.microsoft.com/home/contact?SourceApp=smc2&ContactUsExperienceEntryPointAssetId=apps.microsoft.com
Otherwise contact the devs via their website: https://tidalmediainc.com/contact-us/
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products).
Please do not download any repair tool which may be offered by this site other than the ones I mention/recommend.
Thoroughly research any product which is mentioned here before you decide to download and install it.