I hardly think the moderators will help out here or will the DT as the forms can be filled by anyone so there is no clear proof that KobbyC is doing that. I suggest reporting them to bounty managers instead.

Google forms are filled outside the forum. The only one who could provide an IP address, is Google. And I don't think they'll do that without a court order.

KobbyC is probably being abused just as much as you are. A few months ago, I checked Telegram entries in a bounty campaign, and counted at least 1000 fake (duplicate) entries, probably much more. A very easy solution would be to have Google Docs scrape the address from your profile, but the campaign manager would need to set that up properly.

---

Is it a coincidence that both you and KobbyC have an Ethereum address in their Bitcointalk profile? That's a weird thing to do!

Tough luck
It's up to the user to keep their account secure.

If I would ever run a bounty campaign again, I would require the Ethereum address to be placed in the Location space in the profile.
I've been experimenting with this: just entering a userID is enough to scrape the address, username, and Merit. That would instantly end all username abuse.
I've had an incomplete topic start tab on my browser for a few months now, but never created the thread on it, as I didn't get it to work the way I want it. Google sheets needs to use an ArrayFormula to instantly process results, as each new form entry would just move all formulas one line down. And that works kinda annoying
Slighly off-topic I realize, but since this thread was more or less solved anyway, I hope it's okay.