@Vincent-TP
Answering your question, I have an ER706W gateway router, four (4) SG2008 switches, and an EAP610 access point. I am in the process of migrating to Omada products from Synology and still have two Synology routers that need to be replaced with EAPxxx acess points. At present, I do not have a hardware controller and all the Omada products are operating in standalone mode. I plan to add an OC200 controller but can not find the latest version here in Spain. All the retailers I have contacted (including Amazon) want to sell me the V1.0 model.
During the migration, I tried using the Omada app while standing in front of the EAP610. In adding a new SSID, there was no way to associate the new SSID with a VLAN. In the web interface of the EAP610, under Wireless, VLAN, you can enable/disable a VLAN ID and specify an ID for any particular SSID. That capability does not exist in the Omada app. For me, the Omada app is good for monitoring but not much else.