Site-to-Site Connection Status Unknown

Question

Recently, I tried setting up a VPN between Azure and AWS for a company following these instructions:

https://techcommunity.microsoft.com/t5/fasttrack-for-azure/how-to-create-a-vpn-between-azure-and-aws-using-only-managed/ba-p/2281900

However, once I got to Step 11 on the Azure side I notice that the gateway says "Unknown". I am not able to access the AWS system in question directly (I'm working on a specific project) but I'm also not finding anything in my documentation that could point me to the issue. All I am seeing on Microsoft documentation thus far, I've already checked and seems to only be small blurbs not directly related to the "Unknown" status. I've been trying to see what exactly causes the Unknown status to appear with little success.

I've also tried resetting the gateway, ensuring the subnets do not conflict, making sure the IP addresses are correct, etc. When I try to run the Diagnostics I don't get any indication that something is wrong with the network. I've been configuring the gateway in Azure, using the configuration profile sent to me by the person on the AWS side.

This isn't something I've done before so any education or links to documents that might assist would be helpful. I don't want to instruct the AWS user to make any changes until I'm sure that they are what is causing the issue, although I have already asked them to make changes before.

Thanks in advance.