I have smartthings v2 hub
I added one of this IKEA repeaters and worked like a charm. I purchased another one and it does no want to stay connected (OFFLINE).It pairs and shows online but quickly goes OFFLINE and stays like that
Any suggestions? I already delete and repair it
Are you using stock device handler or Edge driver for the repeaters🤔
I have not done a thing about Edge feature. Not sure if you need to activate the feature or how you use it.
All, I did was pairing through the Hub and let Smartthings add the device / select the driver like I have been doing for some years. PS I was able to add a contact sensor yesterday no problem
Those have a pretty weak signal. How far is it from the IKEA device to the next Zigbee repeating device or the ST hub?
As a test, you might put it temporarily one room over from the hub, about 15 feet away, and see if it stays connected there. Or just swap positions with the one that does stay connected and see what happens.
The Hub is on the second floor. The IKEA repeater that works is on the basement. The one that does not work has been on main floor and also second floor next to the hub. Never stays on.
I noticed that even though it pairs it never seen to complete setup properly. Some of the operational info on the IDE for the broken device is missing compared to the working one. For instance no last activity.
I am getting back to making this work. Unfortunately I live a little far from Ikea otherwise would return. Appreciate any suggestions
Pairing appear to proceed, shows in IDE, etc but stays offline regardless of been right next to the hub
Well, I am not sure how but it is working now. 
I was making several updates to my zigbee network and tried a couple of more times to pair the repeater. Problem before was it would pair EVERYTIME but it would go offline right away and stay like that EVERYTIME
Some things I did (trying to improve my zigbee network as devices would go offline regularly, specially in the basement)
- Moved the smartthings hub to the main floor (more central location)
- Changed the zigbee channel to something less crowded (have to repair everything)
- Changed the dth to my orvibo light switches (not sure whether this did anything - they kept turning off randomly, not sure if this improved)
Maybe was interefence but I can tell that in previous attempts when pairing the repeater was 15 cm from the hub. I went to the extreme of plugging the repeater on the usb port of the hub (0 cm). Same result. Always pair but would go offline
One thing, I am not sure is whether there are some (invisible) steps post pairing that happen over a long period of time that should not be interrupted. I tried many, many times. It is possible that most times, right after I saw it pairing, I unplug the repeater and try to put the repeater in a different location.
Another thing, I read some instructions about having to press the repeater button 4 times in a row to reset it. I did this a few times although the device didn’t see to acknowledge I did anything (LED remain flat).
I then long press and tried to pair without much hope. To my surprise, live logs showed traffic. Also some hours after, the IDE for the device got more populated. Right now the new repeater has almost as many fields as the older one (older has some additional firmware data). I also unplug it and moved it and still working well.
Anyway, I wish there is one thing I could pinpoint in case it helps others. 
PS. the ikea repeaters are very good repeating for other devices (better than my light switches). I also have a sylvania smart plug that is supposed to repeat but on three years I have never seen it repeat anything (even though is listed as a router on the IDE)