Don’t copy the addon folder, just copy the whole @ZomBerry Admin Tool folder to servers root, delete the blanks in name (blanks can cause issues not loading mods correctly for some hosters) , copy key to keys folder.
Inside ZomBerryAdminTools folder go to Config folder and edit admins.cfg file: delete SteamID64 inside (it’s the authors ID) and put in your SteamID64, save file.
Rename Config folder to ZomBerry (case sensitive!) and put renamed folder in config folder on server.
Add @CF Mod and @ZomBerryAdminTools at the beginning in additional modifications in webinterface as following example:
@CF;@ZomBerryAdminTools
(if you load more mods just add them after last mod by inserting ;@ANOTHERMod1;@ANOTHERMod2;.............)
Save and restart server to activate.
please take a look to my tutorial (sorry, german language but maybe google can translate)
[TUTORIAL] ZomBerry Admin Tools Installation NITRADO
we can share screen in Discord to assist you doing these steps if you like, just send me a pm