I've solved your paper problem

[MadeByIToncek]

I know, it's all spagheti code but it works.

[MadeByIToncek]

Code that saved it. Store somewhere safe :)

const express = require('express')
const app = express()
const port = 3000
const fetch = require('node-fetch');

function biggestNumberInArray (arr) {
    // The largest number at first should be the first element or null for empty array
    var largest = arr[0] || null;

    // Current number, handled by the loop
    var number = null;
    for (var i = 0; i < arr.length; i++) {
        // Update current number
        number = arr[i];

        // Compares stored largest number with current number, stores the largest one
        largest = Math.max(largest, number);
    }

    return largest;
}

app.get('/', (req, res) => {
  res.send('Hello World!')
})

app.get('/api/v1/:project/', (req, res) => {
  let project = req.params.project
  fetch( 'https://papermc.io/api/v2/projects/' + project )
    .then( response => response.json() )
    .then( response => {
       res.json(response)
    } );
})

app.get('/api/v1/:project/:version/latest/', (req, res) => {
  let project = req.params.project
  let version = req.params.version
  let lastestbuild;
  fetch( 'https://papermc.io/api/v2/projects/' + project + "/versions/" + version )
    .then( response => response.json() )
    .then( response => lastestbuild = biggestNumberInArray(response.builds))
    .then( response => {
      res.send(lastestbuild.toString())
    });

})

app.get('/api/v1/:project/:version/latest/download/', (req, res) => {
  let project = req.params.project
  let version = req.params.version
  let lastestbuild;
  fetch( 'https://papermc.io/api/v2/projects/' + project + "/versions/" + version )
    .then( response => response.json() )
    .then( response => lastestbuild = biggestNumberInArray(response.builds))
    .then( response => {
      res.redirect("https://papermc.io/api/v2/projects/" + project + "/versions/" + version + "/builds/" + lastestbuild + "/downloads/" + project + "-" + version + "-" + lastestbuild + ".jar")
    });

})

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`)
})```

[ChristianKernDev]

Is it possible to somehow not rely on third party URLs and use paper API directly?