Don't compare drugs with a gameserver. Stop spreading panic that people will go to jail because of running l2j servers. People need to understand that lineage2 private servers themselves are legal. Only way they can get to you is via website (if you use trademarked media, keywords and etc.). Any software developer who works professionally or anyone who attended patent lectures in university know this.
For example, l2jserver.com is running under GPLV3 licence as an emulator for "learning purposes". Thats all you need in your website to cover yourself from allegations of pirating. Especially if you run a java server, which does not have any resemblence to the leaked L2OFF files.
Only way ncsoft/innova can get you is on trademark (using l2/lineage2 keywords, images in website and etc.), and for that reason having a message like "all trademark rights belong to their respective owners" used to be enough in the past.
Worst that they can do now is ban your domain, so I noticed lots of servers who started moving on domains that don't have l2 prefix and in their websites you will never see l2/lineage2 word mentioned. Look for example how project-essence prepared their website. Problem solved.
Again, please stop spreading panic if you don't know how the industry works. Just checkout how biggest private servers are operating and you will get an idea how to setup everything to be as legal as possible. Or hire a lawyer who specializes in gambling/gaming industry, he will do market research and most likely come back to you with same conclusions.
It's 2021, we need to forget about donations. From now private servers should collect money via standard payments/micro transactions like any other gamestore. Admins need to stop using personal paypal accounts for collecting payments and they need to open business accounts. And also to create legal entities and start paying taxes.
Private server admins started getting their paypals banned because the way they setted up their payment model looks like a total scam.
From paypals viewpoint you are not some charitable organization that needs to be running on donations. You are a business. So process payments as business. Now what a typical l2server has is a personal paypal account where payments are accepted via donations, a store with list of items that are given for these "donations", rules in website that say that "project is not obliged to give anything to the person who donated" and cherry on top - you get disputes where people "donated" to a project and didn't receive what is "promised". Thats multiple redflags.