From this page: https://github.com/bryancasler/Bryans-Preferred-Modules-for-FoundryVTT
2020 Oct 22 WARNING BROKEN in 0.7.x - Unable to save game or module settings while this module is Active - Virtual Tabletop Assets - Tokenizer - A tool to help generate token “token” images and their avatars.
I can confirm this is the case in my installation. After disabling Virtual Tabletop Assets - Tokenizer v 2.2.1 I can now change and save settings. Enabling Left-Click to Release Objects means I can now remove the Deselection module.