WiFi terrible

[Yeye]

I have the main meraki WiFi downstairs and I have an extender upstairs and I used an ethernet  cable connected from downstairs to the upstairs one and it made the upstairs into the router. So I took the ethernet cable out and now I have terrible speeds everywhere. Even next to the router I can’t connect to WiFi. how do I fix this. 

[DHAnderson]

@Yeye 

Can you let me know a bit more about your network topology.  For instance, where is your router?  Also, you said you had an extender upstairs.  Is it a Meraki Access Point or a 3rd party WiFi is Extender?

Normally all access points would be plugged into a router, or switch.  The Meraki WiFi meshing will kick in when the link to an access point goes down.

If you cannot run a cable to a Meraki access point, it will connect to the nearest other Meraki access point in mesh mode.  Throughout will be limited because the Meraki access points do not have a dedicated to mesh radio.  Performance will be best the nearest access point is in line of site.  The more building components in the way, the lower performance will be.

[PhilipDAth]

Is the WiFi downstairs a standalone MR?

If so, get a second one for upstairs, and plug it in via that Ethernet cable.

[BrandonS]

You wrote, ".. I took the ethernet cable out and now I have terrible speeds everywhere"

Is that accurate?  Why can't/won't you put it back then?  It is pretty unclear from your post how you have things arranged and connected..