If you start receiving error messages, it would be helpful to check those messages for any specific issues that can be addressed.

Make sure that you are using sufficient gas fees to ensure that transactions are processed efficiently especially during network congestion.

If your transactions are piling up without completing, you can try sending a 0 MATIC transaction and set a custom nonce equal to your lowest pending nonce to clear the queue. Once the queue is cleared, try processing the transactions again.