Repeats from Gcal not syncing in Nozbe

I am trying to set up a calender item (pay a bill I ALWAYS forget) that repeats every OTHER month. Nozbe does not have that option, but Gcal does. If I create the repeat the first instance appears in Nozbe but not the repeats. They show up fine in Gcal and it doesn’t seem to matter if the event started from Nozbe or Gcal. I don’t have a problem setting this up in Gcal (although the repeat time picker in Gcal would be nice in Nozbe) but the idea of CHECKING 2 calendars goes against the ‘trusted system’ idea of GTD eg. is the info I need here or there?

Thanks,
Thos.