The sentence is mostly grammatically correct but has a minor typo: "kicks kicks off" should be "kicks off." Here is the corrected version along with some rephrasing options:
**Corrected Version:**
"Hello HappiVibers, our meme challenge kicks off today! Hope you’ve stacked up your memes😄 Bring on the vibes and the fun!"
**Meaning:**
The message is addressed to a group called "HappiVibers," informing them that a meme challenge is starting


