@Kevin_Z I am having the same problem. Worked great for about 2 weeks & now it's slow & we have about 10 devices & half the time it will only allow 3 or 4 on 2.4 and most of them won't let on at all. 
if it helps when I was trying to figure the mess out, it would not take the password I set up for this site. But would take the password for my router for this app. For this though I was able to use the password for the site. 
 

something is definitely going on. 
I am upset b/c I just saw the box to return this in the garage & asked my husband to throw it out. Thought it worked fine. 
actually the last few days we have seen no difference between this and the router we had for 8 years. 
I want to love this. 

@Anick996i manually selected a 5ghz channel ie avoid auto. Good now. Try it and see.

Steve

There's a new firmware update 1.1.0 available via the Thether app. I am in Russia, so I guess Europe is a go. Let's see how it performs.

Updated available for Europe. 

@broxtor 

Please let us know if that crap continues or if they finally fixed it.

Thank you.

Anick996 wrote

@Kevin_Z I am having the same problem. Worked great for about 2 weeks & now it's slow & we have about 10 devices & half the time it will only allow 3 or 4 on 2.4 and most of them won't let on at all. 
if it helps when I was trying to figure the mess out, it would not take the password I set up for this site. But would take the password for my router for this app. For this though I was able to use the password for the site. 
 

something is definitely going on. 
I am upset b/c I just saw the box to return this in the garage & asked my husband to throw it out. Thought it worked fine. 
actually the last few days we have seen no difference between this and the router we had for 8 years. 
I want to love this. 

@Anick996 

I had the same issue with the password. First it dropped all devices (about 15) on my network 2.4gh over the weekend and I had to reboot the router. Then some of the devices would not auto connect due to password not being accepted. No matter what I did it would not take the password the was set up in the router. I re-entered the same password on the router and then rebooted. Went back into the devices that could not handshake with the router and had to do a "forget network" then re-enter the same password again. 
 

This router is garbage and TP LINK has no help. It's all bandaids. Pathetic how a company like this can still be in business. 

I foolishly updated to 1.1.0 Build 20200427 rel.80857(5553) and noticed speeds dropped SIGNIFICANTLY.

I went to try to downgrade by manually flashing an older firmware and now I can't revert to any other firmware manually, I see this:

Has anyone else lost the ability to change fw's?