Update prerequisites.mdx

Author: CelloSerenity

docs/installation/prerequisites.mdx

@@ -22,21 +22,23 @@ To install SideStore, you will need:
 
 SideStore utilizes an on-device VPN which allows SideStore to communicate with internal services.
 
-1. Install the StosVPN app from the [Apple App Store](https://apps.apple.com/us/app/stosvpn/id6744003051). If StosVPN is unavailable, you can utilize the [StikDebug](https://apps.apple.com/us/app/stikdebug/id6744045754) VPN.
+1. Install the StosVPN app from the [Apple App Store](https://apps.apple.com/us/app/stosvpn/id6744003051). If StosVPN is unavailable, you can utilize the VPN present in StikDebug. If you live in the EU, install StikDebug via [AltStore PAL](https://altstore.io/download), otherwise install via the [Apple App Store](https://apps.apple.com/us/app/stikdebug/id6744045754). Note: you can't sideload VPNs on a free account.
 2. Connect to the VPN. If you are prompted to "Allow VPN Configurations", select allow and enter your passcode.
 
 This VPN is required to be turned on any time you wish to install, update, or refresh apps in SideStore.
 
+Now, follow the instructions corresponding to your computer's OS:
+
 ### On your Mac
 Download and install iloader for [Mac](https://github.com/nab138/iloader/releases/latest/download/iloader-darwin-universal.dmg).
 
 
-## On your Windows PC
+### On your Windows PC
 1. Download and install [iTunes](https://apple.co/ms).
 2. Download the iloader installer ([exe](https://github.com/nab138/iloader/releases/latest/download/iloader-windows-x64.exe) or [msi](https://github.com/nab138/iloader/releases/latest/download/iloader-windows-x64.msi)).
 3. Run the installer.
 
-## On your Linux Machine
+### On your Linux Machine
 1. Download and install `usbmuxd` (may be preinstalled for your distro, otherwise install with your package manager).
 2. Download and install iloader for your distro ([Debian/Ubuntu](https://github.com/nab138/iloader/releases/latest/download/iloader-linux-amd64.deb), [Fedora/openSUSE](https://github.com/nab138/iloader/releases/latest/download/iloader-linux-x86_64.rpm), [other](https://github.com/nab138/iloader/releases/latest/download/iloader-linux-amd64.AppImage)).