I noticed somebody was having a problem applying for visas for themselves and there son using E visa.
You need to use the option in the screenshot and then both applications are sent together.
If you go to pending visa applications, the last application you was working on will be sitting in there. Click on it and recover it.
TLDR : Answer Summary
The post explains how to successfully apply for visas for individuals and their children using the E visa system in Thailand. It describes the necessary steps to ensure that both visa applications are submitted together and highlights a common issue faced by users where only one visa type appears when attempting to apply for multiple persons. A comment adds that to overcome the issue, one must complete the first application before proceeding with the second.