Can't Download Apps From Playstore / Even Cannot Connect To Internet

Not sure what caused it, but whenever I try to download apk from google play store or anywhere else it just says “waiting for download” and never get around to “downloading”.

I checked the wifi download setting too. btw my Flyme OS is, also using data to download.

I am Also Not Able To Connect to the internet as it sometimes show the authentication problem with the wifi and the Mobile Data is Always Shown Null .I Have checked Every Setting Twice in Detail . Help Me Out !!!

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