@Clive_A I will send the email with the backup and the diagram as well. I disabled the ACL for everyone for a short period of time, and only one location reported the problem immediately. As soon as...

@Clive_A I made a quick drawing to help understand the network diagram. If you need anything else, feel free to ask. If you need information about the settings of the Omada ER605, I can send that too.

@PhiiiiL Check my last post, it might help you. I made an ACL allowing communication between the networks I desire through the WAN port....

@Clive_A In this example, I am behind a firewall where I have the IP on the network 172.16.101.0/24.I can ping the remote Omada that has a local interface on the network 172.17.5.254/24, but all the...

@Ashdrak One of the places I use Omada, the provider's MTU does not use a default value. So you need to consult them or find out using the following method. https://www.tp-link.com/br/support/faq/190/

@Clive_A The only action I took was to create this ACL and move it to the top of the list. For me, there are only two alternatives for what could have resolved the issue: either it was the ACL or the...