We had a bug in our code relating to Axelar that was a mix of a negative and positive experience for us. When writing our smart contracts, we used the wrong gateway address in our destination contract. We assumed it was supposed to be the same gateway address for both the sender and receiver, even though they were on different chains. This was a somewhat negative experience because we couldn't figure out the issue for a long period of time (we were responsible for many errored transactions on https://testnet.axelarscan.io/gmp/search 😅). However, it was also a positive experience because when debugging, we learned a lot more about Axelar than we would've if we were successful in our first attempts. We kept digging deeper to see what the error could be. We also talked to the team on Discord and they were helpful in our debugging attempts, and after many attempts we eventually figured out the error.