uBlock Origin and NoScript javascript blocker, but was whitelisted on that domain to test.

and as a developer my self, i can only tell you that you are making a mistake on heavily depending on JS, and third party libraries to top it. Only sick large teams can afford to maintain such hell on a large scale project (especially one with so high performance demands). And even those you see have troubles to even come up with a new feature (discord, twitter, facebook & co) per year.

Who developed it for you? Why so many frameworks and load of javascript stuff?

Also it doesnt work for me, didnt accepted my "i am over 18" confirmation (firefox with adblocker).