iPod and Huawei HG633 issue

Hi, I have just moved over to TalkTalk and have been quite pleased. Speed good and range. But I noticed my iPod seemed to time out online every now and then ( as in few hours) thought it was just settling in. Turns out it’s not settling in issues. The Wi-fi is always on 3-2 bars, but the internet is not there. I can’t even get the routers web page up to adjust anything. Reboot and away we go again. I have looked here but no joy. Have reset iPod etc... I have renamed 2.4 and 5 bands, noticed if it stops on one I can switch to the other and normally works. Wi-fi never drops, only the internet. On all the other devices 3 other Apple and 3 windows work all day every day so far. Just my iPod. Is there a known issue? Or a software update? Or a different router that can be supplied? Or am I asking to much? I am thinking of digging out the old Bt router and bridging it just for the iPod but it’s not the best setup. I spoke to mon on the web chat and didn’t get it at all. I copied the chat so if there was someone from TalkTalk willing to read I will post it to them.
thanks to all