I purchased turbotax deluxe from staples but I found out that I can not use it because my Mac is 10.13.6 and I need at least 10.14. I what to do my taxes as I h...

I have used turbotax for years but this year since my Mac is MasOS10.13.6 I can not use the turbotax deluxe I purchased at Staples. I want to continue using tur...