Talked to dev-team, CamSync managed cameras will be supported by the eWeLink WEB before July, that my fault earlier that I misremember.
As for the issue whick can not streaming to Alexa echo show, and Google Nest, we have checked and success to view the CamSync managed cameras on both of them, However, in our tests, there is a 10% probability of not being able to stream due to network conditions, resulting in a timeout of the push stream, and Alexa requires that the push stream be completed within 6S of the establishment of the connection, or the link will be discarded.
Here is the tips from our engineer,
Please follow the steps on the docker hub to reinstall and reconfigure CamSync, here is the installation guide.https://appcms-src.coolkit.cn/camera-gateway/help-camera-gateway/13914.html
Note: Check the parameters of the run command. Before executing step 3 to start the container, manually delete the contents of the ~/mg folder before running the docker command.