Ah, then it finally clicks. I really think you need to make this a lot clearer though. As others have already pointed out, if you're going to require this information, I think you need to ask for it up-front - don't ask for it at the end of the installer.
Something else I would add is that there are almost 300,000 people "in my team" using my business email domain (yep, it's a big company). I think better wording here would be "organization", rather than "team". But...
...I'm personally pretty unsure about this whole-company team/organization thing overall - for example, I work at a consultancy/outsourcer, and we can't just share whatever we want beteen divisions or teams. You've raised a lot of money (congrats :), and at some point you and your investors are going to want to make some money; so you can either charge individuals (which you've ruled out), or charge companies. Assuming the latter, and assuming you're going after larger companies with a lot of devs/sysadmins, I think your approach/presentation needs to be better tailored to that audience. If you're set on this "team" approach, I personally think it would be better to have it more like Slack (and many others), where someone has "ownership" rights for the team, and can manage its membership.
Thinking some more, I'm guessing your plan is something like: get as many individual devs/sysadmins on board for free, so they want it at work. If that's right, you need 2 better approaches/presentations: let individuals get it without barriers (like asking for business email...), and have a clearly separate paid plan.