TVAddons, the unofficial library for Kodi add-ons, has mysteriously disappeared, leaving its domain names unresponsive after the DNS entries were removed.

Millions of its users reported that they could no longer access TVAddons' site since Monday. Users trying to enter the site receive a browser error message or are redirected to a page of TVAddons' domain name registrar Uniregistry.com.

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TVAddon's domain name has stopped responding. And its DNS entries have been removed, meaning it is no longer accessible to the public, the TorrentFreak reported.

The site mysteriously left without prior warning or public explanation, and it is not clear who and why the DNS entries were removed. Even its social media accounts also disappeared completely.

With TVAddons gone missing, many users will now likely have problems running one of the most popular add-ons, which was hosted on the site - Exodus - when it is time to update the software. Before it shut down, the site was reportedly visited by about 40 million unique users in March and hosted 1,500 different add-ons. 

The mysterious shut down follows after Dish Network filed a lawsuit against Kodi add-on ZemTV and TVAddons earlier this month. The direct-broadcast satellite provider accused ZemTV of directly infringing several TV channels, while TVAddons for distributing the questioned add-on. Dish Network is demanding ZemTV to pay $150,000 per infringement in damages, while TVAddons also faces statutory damages for contributory and vicarious copyright infringement.

After Dish Network's legal move, several other add-ons have decided to shut down including Phoenix and developers One242415 and Echo Coder. Other third-party projects and add-ons have also closed their doors, announced a temporary hiatus, or implemented other changes.

Although Echo Coder did not give a specific reason for the move, he noted that the increasing popularity of third-party add-ons was not beneficial to the community.

"The reality is we did say the growth of third party popularity would hinder us. Unfortunately, now it looks like an implosion," he wrote.