Adding on to @Tsuey's point, while it is in the community's best interest to be able to enjoy the addon to its fullest extent, it is also in the community's best interest to not be indefinitely banned from random servers that wasn't even invoked by that server's administrator(s) and owner(s). Something must be done.

What's the deal with Helm's Deep Reborn? https://www.youtube.com/watch?v=CestDbQ1eOs

This is the video chronicling this ongoing issue.

Please, the L4D2 community needs your help.

Then you should know that SeriouS_Samurai has since gone on to port that map to L4D2 -- just as you predicted -- which for several years went on without malicious issue (beyond it originally being a theft and Team Chivalry not DMCA'ing because they noticed people enjoying the map and prioritize player's enjoyment about their own personal rights).

But since then, he has gone on to hijack servers with it.

He needs to be stopped, and we're reaching out. He's destroying L4D2.

Hello. It has been a difficult process in getting contact with Team Chivalry members mostly due to them having long moved on with other projects -- however, if you're the Sir_Alexander from gamemaps (formerly known as l4dmaps), who I quoted here:

https://steamproxy.com/app/550/discussions/0/1638669204753989456/?ctp=3#c1636418037460298564

Specifically this segment:

As for a LFD2 version of this map, that's probably not happening. At least, not anytime soon, and S_S is certainly not ever going to do one with Team Chivalry's permission. If he does make a port of this map for LFD2, then we'll just get control of it away from him, like we did with this one.

hey boi

reported to Klei