Hi Steve Li thanks for submitting this issue, and thanks to everyone that voted and left a comment or upvoted it to bring it to our attention ~

I'm happy to report that we've released a new version of the game! You will no longer be able to equip weapons unless you meet their ability requirements, and we've done some improvements in order to make it more clear, among many other things.

You can grab the newest version of the game here:

If you're still experiencing the same issue, please leave a comment to let me know~

⚡Val