Two hugely frustrating issues as they make the app virtually unusable.
Details:
Device: Vivoactive (V3.30), GCM version: 3.1.4.1, iPhone 5c
First issue:
Open app, tinker around, watch starts syncing, 5-10 seconds after sync complete the app vanishes/closes - it does remain in task list though (note: sync always seems to succeed, although some sync seem to get lost - see issue two). This happens EVERY. SINGLE. SYNC. without fail. Obviously makes app somewhat difficult to use.
Second issue:
At certain times the app seems to simply fail to work - I try to open and I will get only a spinning icon. The first time this happened I re-downloaded several times and it eventually seemed to fix itself, but has since happened again. The phone often says its disconnected (although it is inconsistent in this respect, it sometimes says its connected as well), but notifications still come through so it must be connected.
There are some other minor issues and some very seriously clunky functionality, but I will leave that for another day.