Glad to hear it's useful for you!
Regarding Chrome, I haven't updated the (sideloaded) extension to Manifest V3 yet, which is why it can't be installed under newer versions of Chrome. I'm not sure if it's possible or not without reducing its featureset, but it's something I'll look into in the future.
In the meantime, if you do still want to use it with Chrome browsers, you can still use it as a userscript (using something like Tampermonkey or ScriptCat), which has most of the functionality of the addon.

Google Images recently updated, and the previous technique to find the original images past 100 (the preloaded amount) doesn't work anymore. I've implemented a fix for the userscript version, but unfortunately getting this to work on the extension version is a bit trickier, and might not land in the next release (it needs to intercept HTTP calls, which is definitely my least favorite approach towards supporting a website).
I've tracked the feature here: https://github.com/qsniyg/maxurl/issues/1533 . Note that once it's implemented, you will need to enable "Rules intercepting HTTP requests" (under the Rules tab). It's disabled by default because it carries a fingerprinting risk.