Can't install plugin Posted on March 26, 2016 By Can't install plugin › Can't install plugin 0 Vote Up Vote Down Ron Zeen asked 2 years ago I want to upgrade the testemonial plugin from free to pro version. Purchased it, downloaded it. But after uploading it to my site (zip format) it tells me that there are no valid installations… What is going wrong here ? 1 Answers 0 Vote Up Vote Down Golam Samdani Staff answered 2 years ago Hi Ron, Can you please delete the free version? It’ll not delete your data. Then install the Pro version. Hope it’ll solve your problem. Let me update.