Yes you do. Adobe Photoshop is a subscription service, which means you can't use it unless you pay every month. The full Adobe Creative Suite costs about the same money each month as Fusion 2.5+ costs to purchase forever.You will never pay an update/bug fix on Adobe Photoshop, or others company who made video game creator
And Adobe are rubbish at fixing bugs. There are countless of bug reports on adobe's website, including several from me, that have been ignored for years. No Adobe staff even bother to respond, and the bugs remain year after year. Believe me, we have it really good here with Clickteam.