I have had the same problem with my 348 since the beginning of April. Tried everything including factory reset (as suggested by Kazam support) without success. An internet search indicates that some other users of the phone are seeing similar issues. (Also users of Gionee phones ...).
For me the issue is present when using mobile and also on our home wifi (SuperHub 2ac). Weirdly, though, when I use the phone in the office at work (a VirginMedia Business connection) everything works perfectly!
I have found a solution to the problem on a website called android.stackexchange.com. The problem is not unique to the Kazam 348 and a solution for another phone seems to have worked for mine. Sally you should try this on your phone, go to settings then apps and then all apps. Scroll down and select Google Play. In Google Play tap the clear data and clear cache buttons. Do the same in Download Manager app and the updates that were previously stalled start to flow. Hope it works for you and thanks to both you and Mat for taking time to reply to my post.
Thanks very much for the suggestion, George. I'm glad to hear that you have found something that works for you!
Sadly, no joy with my Tornado 348, though All Play Store downloads/updates still go straight into 'paused' status when using my home WiFi or mobile data ..... but everything works fine when I access Play Store via the WiFi at work. All my family's other Android devices are experiencing no problems at all with Play Store (and neither did my Tornado 348 before April). It's all a bit of a mystery.
Like you, I had been wondering how many other Virgin Media / Kazam users were affected - so thank you for asking the question.
I thought that I had a solution to the problem (see message 5) but I now find myself in the same situation as Sally, in that my phone will not download on my home wifi or mobile data.It works fine on other wifi networks. My home broadband is Virgin Media and it has been suggested to me that the problem is with my broadband and not the phone but as all my other devices are working on it I am reluctant to do anything to my home broadband. As Sally says it is all a bit of a mystery but hopefully some Virgin Media boffin will come up with something.