Group: Forum Members
Sanity check question: Are you sure you're installing the same major release (V6 or V7) and the same edition (Home, Workstation, etc.)? if you downloaded a V7 installer but have a V6 key, for example, that would certainly account for this behavior.
Otherwise, removing the product key to "deactivate" an existing Reflect installation is recommended to avoid the appearance of license reuse when you install it somewhere else, but failure to do that wouldn't cause Reflect to show your key as unrecognized. When I first started Reflect I didn't know about removing the license key either, and during a server migration weekend that had quite a few bumps, I ended up rebuilding the system and reinstalling Reflect multiple times. Macrium Licensing reached out to me asking what was going on, and I explained the situation, but the product key was never rejected. But I suppose something may have changed since then.
One thing you can try is installing it as a trial and then pasting the serial number in later by going to Help > Add License Key. I wouldn't think that would be necessary, and maybe it won't make a difference, but you never know.