I use the app, is it possible to also log onto the PC? I suspect they are different platforms so I assume not.
I have tried seeking the fs on the boards and through members but it is difficult as it only seems to show the top 50 and bottom 5.
You're correct that the browser version of the game is a different platform. The browser version has many very clever functions that are lacking in the app. As you discovered when looking for a specific fs, there is no search function. What you attempted to do is the only way to track down a fs to look at the overview on the app. Frustrating.
Did you check all the leaderboards? For instance, on my world, the leaderboard for the most recent FA looks much different than the overall fs leaderboard.
I would send an email directly to the AM (which you can find in Elvenstats), explain that you use the app and ask them to send you a copy of their overview, if that is of interest to you. Or ask your questions directly.
On the browser version, you can directly search for fs and players. Easy. Sometimes I can use my tablet to access the browser version. The scaling is huge and it is awkward to use, but if I just need to do one thing, I sometimes do that.
You didn't ask, but most importantly on the browser, you can engage in manual fighting in battles. Which is a huge part of the game that the app does not allow.