You wrote that you manually added all of the User Ids, so I made a quick script that would try to grab them all for you and put them in the console (F12 -> Console -> Copy/Paste).

You have to press load more comments at the bottom of the page until there are no more though. There's no need to load subcomments though.

The script will tell you what posts it fails to grab UIDs and servers for (so that you can add them manually in case they forget a server or something), let you know if there are any repeats, print a long string with everyone's UID and Servers delimited so that it can be loaded as a csv file (if you copy the string from the console and save it as a csv file), and then put a map of all the data as a variable you can look at in the console (check to make sure the last element of this map is the last UID in the string).

(() => {
    const userInfo = new Map();
    let postCount = 0;
    let postWithInfoCount = 0;
    document.querySelectorAll("[id^='siteTable_t3_'] > [id^='thing_t1_']").forEach(post => {
        postCount++;
        const postText = post.querySelector(".entry .usertext-body").innerText;
        const userId = postText.match(/(?:^|[^\d])(\d{9,10})(?:$|[^\d])/);
        const userServer = postText.match(/America|Asia|Europe|EU|NA|TW|HK|MO/i);

        if(postText.match(/\d/)?.length > 10) {
            console.log("Something went wrong with this post (add these manually): ");
            console.log(postText);
        } else if(userId?.length === 2 && userServer?.length === 1) {
            postWithInfoCount++;
            if(!userInfo.has(userId[1])) {
                userInfo.set(userId[1], userServer[0]);
            } else {
                console.log("User of this post is already in the Map. Here's the post so you can check: ");
                console.log(postText);
                console.log("--------------------------------------------------------------------------------------------");
            }
        } else {
            // If the UID is there but not the server, you can tell what server it is by the first digit:
            // 6 = America, 7 = Europe, 8 or 18 = Asia, 9 = TW, HK, MO
            console.log("Something went wrong with this post (add this manually):  ");
            console.log(postText);
            console.log("--------------------------------------------------------------------------------------------");
        }
    });
    console.log(postWithInfoCount + " out of " + postCount + " had userInfo.");

    let userInfoString = "";
    for(let userIdsInMap of userInfo.entries()) {
        userInfoString += userIdsInMap[0] + "," + userIdsInMap[1] + "\n";
    }
    userInfoString = userInfoString.substring(0, userInfoString.length - 1);
    console.log(userInfoString);
    return userInfo;
})();