[@Mr.Dave] Update: I had no trouble installing and registering version 5.0. A box popped up to tell me my trial period had ended (I installed new version over the old one) and when I entered the new registration key, all was good — almost.
I tested 5.0 on the same picture I last tried with 4.0. Program ran much faster but the resulting image was not nearly as good. I think in 4.0 the “object removing mode” was “Inpainting 2” and that’s not in the list in version 5.0. Going from memory here, so I may be way off. I tried the other 3 modes, none worked better but I can see where all would have their place. I was trying to remove an object next to another object, both had the same grassy background. In version 5 I get pieces of nearby objects, in version 5 I just got the grass. All this is highly dependent on the picture you’re adjusting. So 5.0 might work better on other pics. I hope they didn’t trade off capability to improve the speed. Results were worth waiting for in 4.0. But 4.0 is now gone; not worth restoring my SSD to get it back.