Starting Sentence with "And" Rule Ignored

I’m an educator. I have my students install the LanguageTool add-on to check their Google Docs. Unfortunately, it seems to be ignoring a few rules, one of which is a style note about beginning sentences with the word “And”

Not sure why LanguageTool add-on for Google Docs isn’t highlighting these occurrences. Is the add-on using the latest set of rules?

There’s no such rule in LT, and several sources think there shouldn’t be, e.g. Can a Sentence Start with 'And'? | Words "Not" to Start Sentences With | Merriam-Webster

Probably Michael is referring to this:

https://community.languagetool.org/rule/show/And?lang=en&subId=1

It is disabled by default, though.

Here’s the rule I’m referring to:

https://community.languagetool.org/rule/show/And?lang=en&subId=1

I see - as Tiago said, this is turned off by default and I don’t think there’s a way in the browser add-on or Google Docs add-on to turn on these rules, sorry.

Is there a list of rules that are turned off by default?

Why are there rules that are turned off by default?

Can I put in a feature request to have a switch added to the Google Docs add-on?

I see there is an option to change the LanguageTool API server URL. Is there another server URL I can point to that is more stringent? What must I do to setup my own server that will allow me to turn on these more rigorous rules?

Not really a list, it’s all those marked as default="off" (either directly or via the category they are in) in the grammar.xml

There are several reasons, most often it’s probably “too many false alarms”.

Sure, you can do so in this github project.

I don’t know of another public server. Running your own server is documented at HTTP Server - LanguageTool Wiki.