Accidentally opened package file with notepad

Could you change your windows so that it shows known extensions

https://support.microsoft.com/en-us/help/865219/how-to-show-or-hide-file-name-extensions-in-windows-explorer

Should work similar for Win 8.1 and 10. If not, just google instructions.

Once they show, what extension does that file have ?

https://imgur.com/a/wu9DV There you go.

Oh, that's an old format mod.

You need to leave it in the zip file. Don't unzip it but put the zip file in your folder.

Okay, i will later because my laptop isnt with me, but if it works thank you so much for taking time to help me i really appreciate it 💗💗💗

I did that and it didnt work!

The mod hasn't really been updated in a while and reports are very mixed. 

You do have script mods enabled, right ?

MC Command Center also has some settings to change speed, maybe look into that one instead ?