Ok now i see the addon manager in the add-ons menu but not the coatl menu and no a380 jetway
If you see only the Addon Manager menu, it means the antivirus is still blocking Couatl, be sure to download and install the Stand-Alone Addon Manager with the antivirus turned OFF, and BEFORE launching FSX, configure the antivirus to exclude the following files from scanning:
YourFSXFolder\bglmanx.dll
YourFSXFolder\fsdreamteam\Couatl\couatl.exe
YourFSXFolder it's usually C:\Program Files\Microsoft Games\Microsoft Flight Simulator X, if you installed it in the default folder.
Also, be sure you install the Stand-Alone Addon Manager as the last thing you do. If you reinstall a scenery using an older installer, you have to reinstall the Stand-Alone Addon Manager again.