To add a new site, enter an unique title/domain (without www.).
Select options for useragent (like Googlebot), set referer (ignored when Googlebot is set), set random ip-address, block Javascript, block regular expression, unhide text on amp-page (or redirect to it) and/or load text from json or Google webcache (paywall|article selector); for examples import from GitLab.
Custom sites (new) are enabled automatically in Options (cookies will be removed by default unless you enable allow_cookies).
If you want to use custom sites (for non-listed sites) enable it in Opt-in Custom sites enabled:
You can also just request permissions for the custom sites & post-release added sites (below).
If permission is missing the icon badge will contain a 'C' (or '+C' if you can import the custom site from GitLab; when no fix X).
On Android: to enable custom sites you need the 'custom' add-on version (with access to all sites): Bypass Paywalls Clean (custom)

List of custom sites

* already in default list (double domain)

Json file

You can edit/sort the text area and save (only when json-text is valid). Clear & save to reset. You can also export/import json-text for new installations.