I suspect that you did what I did with one of my early refills, I did NOT LOCK the spool halves together. They separated and turned into a bound up mess!
Fortunately, I did not panic, kept the spool more or less together and rewound it on to a proper spool and twist.
Now you have two tasks, should you choose to accept them.
- Carefully, and quite manually, per @JonRaymond 's advice, rewind that mess on to a proper spool.
- Learn to tighten the spool halves, when you add a refill, until they solidly CLICK closed, thereby making the spool solid for the crazy back and forth that the AMS will perform.