Choose either encoded or decoded. The default key should have all normal characters on a keyboard. If there is one on your keyboard not in the key, or there is a "00" in the encoded result, then put the character with the key in the comments. Be careful with custom keys, because if the key does not have all the letters in your "To encode", then it will be a "00".
The default key is: 3(db}pu8_igy^c|{0~=*z&?fv@:#>< hrjo2e[/t4%k;w!n-,m`q.'9)6+5l$"1a]7sx\ Article: https://en.scratch-wiki.info/wiki/Encoding_and_Decoding_Cloud_Data