Earlier quoted context omitted.
I'm the sole active moderator of r/electricvehicles, and you wouldn't believe the amount of self-promotion spam that I have to deal with on that sub. It's gotten to the point that I've written a custom Python app to use the Reddit API to pull all of the analytics on any new post and present it to me in a digested form: How old is the account? How much organic-looking activity has the user done across other subreddits…
Many years ago I got banned by a moderator on a sub for answering someone's question. I did have a product but didn't pitch it directly except in paid ads on the sub. My username was the website. I emailed the mod for clarification as to what line I crossed because it seemed arbitrary. She never replied. So be careful with your metrics. What happened to me was definitely not cool. And, I quit my paid advertising ther…
Obviously I don't know the details of the situation and certainly don't know the mods reasoning, but from your description if they banned you because of your username that sounds ok to me.
Your paid ads are irrelevant, an interesting consequence of reddit not paying moderators is that moderators are also not going to be biased because you are paying reddit.