VLAN Wifi local address

Hello. I have WAP LTE6 and HAP AC2 router I have Passthrough with access to WAP after VLANIE. However, WAP also has WIFI interfaces, of which I don’t have internet access right now. My guess is that it can be done so that if WAP gets an IP address after VLANIE, it can also be done so that WIFI interfaces also receive one. I have some ideas on how to do this but I would not like to convert something to VLAN and then jump on the roof to reset WAP to have access. Thanks in advance for your help