Subscribed calendars not synching

Hi,

I have an iphone 5 and ipad 3 both on ios8, although I think this was happening on ios7 too.

I subscribe to a load of Basecamp calendars, which I do so from my macs (mbp/mini). These calendars sync perfectly and quickly on my desktop calendar without any issues.

On my i-devices, however, they do sync, but they don't keep synced. If something is updated on the main basecamp calendar it goes to my macs ok, but not my phone/ipad. I've found a way to force refresh it by going to settings and logging into my icloud account, (see link below) but that's a pain to have to do that every time I want to look at my calendar.

This happens with any ios calendar app including Apple's one.

https://discussions.apple.com/thread/3802416

Is there any sort of a 'fix' for this? Have I set it up wrong?

Thanks very much!

 

Thanks for the reply.

That would mean that it checks it over time - but I can go days/weeks without an update unless I log into icloud to force a refresh. Also, the link I posted is full of people that seem to have a similar issue but aren't using Basecamp.