Both packed up in one day!!!! In different TVs , even tried different wires, also different batteries in remotes too! All it at is a box with “Your homepage is temporarily unavailable “ Or even doesn’t get onto that bit at all it’s just on/ off it’s so stressing as I don’t have no other tv to watch even dvd as we rely on now tv 😞
I doubt two sticks would fail at the same time, where it sounds like either an internet or Router conflict.
If it was me the first thing i would try is to disconnect the power to both the sticks and your router for about a minute, then restart your Router first (give it say 5 minutes to settle down) then restart both your sticks.
Should you still be getting no joy, then maybe see if anything in this linked below trouble shooting guide makes any difference.