How is iOS updating all my apps without permission? iPad is at iOS 12.3, iPad is WiFi only. iPhone is at iOS 12.4.

Both have got automatic download and updates turned OFF in settings → iTunes and AppStore. Yet in the last weeks both devices, without intervention or permission have updated every single App. This has resulted in ADS (apple disorientation services), where I have to login to apps again with passwords I haven’t used for years, and everything’s looking different and working differently. How has this happened? 

I do iOS updates for security, but if my App ain’t broke I don’t wanna fix it. How do I stop this app auto-update feature on my iOS devices?
FWIW, this just happened to me. Had auto updates turned off, kinda freaked me out. Turned out, in my case, I had enabled “offload unused apps” to free up space - got a feeling this might be why all my apps needed re-downloading. Not sure if “re-downloading” == “upgrade”.