Devices disconnecting every 5 minutes

[New5]

Hello . We switched to EE in October from Sky and have had disconnection issues from the WiFi hub since it was installed. ( Essential Fibre 36 ) 

The lights on the hub never change but basically we will lose connection every day several times a day. Sometimes it is literally just a case of only one tablet being used at any one time as soon as the other picks one up, it disconnects as it cannot cope with 2 devices. Leave it a few minutes and you can get back on albeit at a very slow speed initially ( speed checks show anywhere from 0.5mb to 5mb) but then eventually back to around 19mb. 
Devices are mobiles , desktop, Printer etc. Only 2 people in household. No TV streaming . So not exactly pushing the limits I wouldn’t say. 
6 Engineer visits so far. 2 In house from EE and 4 openreach. Line tests fine every time but the last 2 openreach showed us the screen which showed the router keeps disconnecting every 5 minutes or so which they said isn’t right at all so a new router was sent. 
Exactly the same with the replacement so nobody seems to know the answer!  Sockets checked by openreach ( master socket no others in house) 
Every time we contact , it apparently shows as a definite fault at EE CS end but yet openreach say absolutely no faults and EE cs don’t understand what they are seeing basically. 

Although we have had many line problems in the past (being end of exchange and part fibre it is slow anyway)  but these were all identified and fixed as trees rubbed through but the faults were complete loss or intermittent with router lights going off.
This is completely different and I am not sure if it is coincidental that it started after switching to EE hub or is there a reason it could be just this hub as honestly  if the engineers cannot understand why, I definitely don’t!  We are able to leave as the guarantee was 30mb and we don’t ever hit 21mb but if it is a line issue, this doesn’t help either. 
Any help really appreciated!! 

[XRaySpeX]

It refers to that connection, wired or not.

[New5]

Thankyou. I think we have definitely hit a brick wall so to speak then as OR say the problem remains with the devices disconnecting , EE tech say there’s still a problem but neither can work out why.
Given we have ruled out line this time then, I think it’s a case of going back to SKY and trusting that their router for what ever reason prefers our house ! Which is extremely frustrating as even to a complete idiot like myself, this makes no sense but as nothing else has changed at all house wise, device wise and the EE router has been swapped at the engineers request, we are out of ideas from all! 

[XRaySpeX]

That's right! For as long as the sync speed remains at 24 Meg & shows no sign of any discons (watch DSL Uptime) the problem lays with the the router to its devices connections.

[Mustrum]

@New5   what is it you have plugged into the ethernet ports?

Could you try disconecting anything you do have plugged n and see if you are still getting the same error messages in the technical log?

[New5]

Hello. Yes we disconnected all devices and just the laptop was on the Ethernet connection. 
To throw another problem into the mix, this morning same problem with WiFi down so again checked the wired Ethernet connection and had this message..  Could not access any internet so this takes us back to square one with a line issue!Subsequent speed test showed 14mb when back on and then back up to 20mb again.

[Mustrum]

---

@Mustrum wrote:

@New5   what is it you have plugged into the ethernet ports?

Could you try disconecting anything you do have plugged n and see if you are still getting the same error messages in the technical log?

---

Asking again as you did not answer the question or try the tech log again.

[New5]

Just the laptop as replied was plugged in through Ethernet. As I had no internet connection  at all couldn’t get a tech log at the time but this is it now.

[Mustrum]

@New5    you are still getting eth2 up/down messages.

This suggests what ever you are connecting to eth2 is faulty, or the cable is faulty.

Do you have another ethernet cable, and can you try another port?

Does the laptop  also have a wifi connection?

[XRaySpeX]

There's really no point in doing speedtests when you have your sync speeds & connection status readily available to you & your issue lays with your devices' connection within your LAN. Just keep an eye on the Advanced Settings > Technical Log > Information page.

So you've had a BB discon or 2 today. It's no big deal or back to square 1 yet to worry about.

[New5]

Thankyou. Yes laptop has WiFi also ( brand new laptop ) but we turned off to be sure that it was just on Ethernet, The Ethernet cable is brand new also just to be sure as we had an older. one but wanted to be sure it couldn’t be that either so both have been tested! 

Yes we can try another port but this is the second router and is brand new again so I am not sure if that makes a difference? 
The problem is it is intermittent as to when the disconnection occurs.