Smart Plug randomly stops communicating with network.

Smart Plug randomly stops communicating with network.  
I have Smart Life Amysen Smart Plugs on 2.4 Ghz wifi network that stops responding to Alexa or the Smart Life app.  They are running the most current firmware.
I live in an apartment in NYC with many broadcasting SSID's.  My apartment is only 900 sq/ft with limited obstructions.  

I do see the devices on my wifi even when they are not communicating.  They are ranging from -50 to -70 db
My router does show this event:
WiFi Interface [wl1] set to Channel 149 (Side-Band Channel:N/A) - Reason:INTERFERENCE

I purchased the Smart Plugs from Amazon and not finding any support pages for this product.

Anyone experience something similar ?
LVL 27
yo_beeDirector of Information TechnologyAsked:
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Natty GregIn Theory (IT)Commented:
download the software on your computer that interface with your device plug device directly into the computer once the software finds and brings up the gui for the device configure it with a static ip and change the chanel, password etc.
yo_beeDirector of Information TechnologyAuthor Commented:
Are you referring to the wifi router or the smart device?

Edit: I disabled the 5 Ghz  SSID and I see a stable environment.  The jury is still out, but things are looking better.
yo_beeDirector of Information TechnologyAuthor Commented:
It has been 24  hrs and all devices have not gone offline.  I will chalk this up to 5 Ghz channel .

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yo_beeDirector of Information TechnologyAuthor Commented:
Thanks for your help.
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