Google apps internet connection issue on wifi

Google android devices on my wifi are having issues. youtube app seems to working fine then suddenly it says i'm offline. then it comes back online after some time but thumbnails dont come up. sometimes the play store and the play music app and the google search app say i'm offline when everything else works fine. happening of multiple android devices on the same network and youtube and other google services work fine in the phone's browser. no such problem is there on mobile data. already tried factory resetting my phone, clearing google play services cache, and logging in to google account again, and wiping data of all google apps individually. nothing worked.
please help! thank you

Welcome to Android Central! Does this only happen on your home wi-fi network, or on any wi-fi? If it's just your home network, then try rebooting your router by unplugging its power for 30 seconds. If that doesn't help, see this guide for more tips: http://forums.androidcentral.com/amb...-problems.html

Honestly it sounds like a problem with stability or strength of your WiFi.
Personally I have found that YouTube and other apps are not as finicky about a stable network connection within a browser, typically because of buffing.

Several years ago, when my parents house [emoji537] had DSL before the upgrade to Fios, occasionally the WiFi would become unstable and I noticed that my YouTube app and other apps would either not work or would be unstable. Typically, however, YouTube and my Gmail or Hotmail would work using a browser.

Personally my suggestion would be to first try rebooting your WiFi Router or Network Switch. Also I would try using YouTube and other apps on your phone while you are connected to a strong public WiFi network connection to confirm that the problem is with your home WiFi.

If rebooting you home WiFi router does not resolve the issue, then I would contact your home internet provider to request a replacement WiFi router.