Implementing patreon level restriction for manga chapters on a WordPress

The Patreon plugin successfully restricts access to the main manga pages based on user subscription levels; however, it does not extend this restriction to the child posts, which represent individual chapters. The goal is to display a “restricted manga” message on chapter pages if the parent manga post is restricted. Current attempts to retrieve the parent post’s restriction status from the chapter page have not yielded the expected results. Additional functionality or modifications to the plugin may be necessary to achieve this requirement.

Example
www.manga-website.com/onepiece/ ← we restricted this to only tier 1 subscribers
www.manga-website.com/onepiece/chapter-01/ ← chapter 1 should also restricted!

I’m using Madara Theme and i’m noob at PHP so please guide me on how to do it!
note that my chapter images are hosted to AWS3 (Amazon Bucket)

my 2nd problem is i want to apply custom codes for specific tier subscribers
for example my tier 1 is to remove ads. so this tier’s subscribers should get my custom code excuted so they see no ads.

the 3rd problem is that what if i want a post to show for tier2 and tier3 only how can we implement this as there is option to “all tiers” or only 1 tier

Using the free version of Patreon WordPress
Version: 1.9.1
Maybe i will upgrade soon so if there is a possiblity to do these on the free version i want the same codes but the one that works with pro too (so i want codes for both versions as for now i will use the free verison)

UPDATE: I FIGURED OUT THE SOURCE CODE AND IMPLEMENTED MY OWN PLUGIN WITH MY CUSTOM REQUIREMENTS THANK YOU PATREON AND THE DEV OF THE PLUGIN

Great to hear you sorted it out. You could lock your entire site if you arent doing public posts too.