Here is my log which is a working session
[2024.08.19-07.42.05:600][ 0]LogDirectoryWatcher: Warning: Failed to begin reading directory changes for C:/Program Files/Epic Games/Fortnite/FortniteGame/Plugins/GameFeatures/SaveTheWorld/Content/Localization. Error: The system cannot find the file specified. (0x00000002)
[2024.08.19-07.42.05:608][ 0]LogPluginManager: Mounting plugin localization for 'SaveTheWorld'...
Initially the first line looks like a problem but then the next line shows the SaveTheWorld plugin from over the network.
All the actual plugins are stored on the content server and the version for each language (English, German, Spanish) is downloaded into memory temporality during the building of Island content.
Looking at your log he SaveTheWorld plugin is not loaded from over the network.
No idea how you can find another public wireless.
Most Coffee like Costa, have Wi-Fi 6.
There could be a problem if you have a Internet Zone manager blocking.
Windows 11 PC uses MS Edge, Google Chrome and if you load other browsers there software many not correctly work with Fortnite.
Could this be a problem Epic Support found
How do I switch to a public DNS to strengthen my connection? - Technical Support