Modem no longer working with 'box'?

[Chebico]

Hi,

My modem will no longer work through a splitter.
I've had the same untouched setup for over 6 months now, and its just started today for no apparent reason.
The ready light just flashes slow like it cant connect.
If i take out the splitter that goes to eurovox it works fine.

I've tried checking all connections but still not working.
I've tried just the modem on the splitter and it doesnt work either (tried both connections on splitter too)... but the box is fine and signal is at 83-85% all the time so im baffled.
Don't see how this has happened since like i say.. its been setup like this for over 6 months.

Any advice please?

[aftermath]

could be working on broadband in your area.
wait until a few hours and try again, maybe even tomorrow.

Make sure you re boot the modem, wait till all lights come on, then re boot router , PC and box.

[Chebico]

I think you might be right.
Seems to be working again, plus my signal on the box seems up to 87% now.

Thanks!