easy

https://www.cs.du.edu/~snarayan/crypt/vigenere.html <--- helped decode the cipher

encrypt-decrypt concept can use cyberchef

Cyberchef used.

Someone please tell me how to do this manually, thanks

LOL

This is a really fun one! Even tho some are complaining that its too obvious. You can spice it up a bit and write a little (Python) program to decrypt it and maybe to create your own Vigenere Cipher. This way you will learn a lot and thats what it is about, right?

Easy. Just use Cyberchef

That would have been quicker if I didn't completely overlook the key for 10 minutes. ?‍♂️

No one could break the code for III centuries (300 hundred years). Back then it was used to secretly deliver messages.