Your problem is not adobe but the fact tgat you cannot possibly install a QB version last supported 6 years ago. It has not been gor sale for 9 years. Whomever sold you a new never activated program failed to let you know it is obsolete. Or if you were sold a used program, it is impossible to have the license transferred.
Chalk up your purchase of 2012 to a learning experience and buy 2021 direct from Intuit and if you cannot update your 2006 file yourself then reach out to QB support as tgey are know to convert for free if you buy from them
Or find a nearby Pro Advisor that has 2012 installed and who would convert for you.