Arc not connecting to core

i tried upgrading to Roon ARC yesterday.i am now running Roon ARC 1.0.0 build 100045 i tried updating yesterday but ARC cannot connect to core. ARC loads on phone and ipad but at bottom of screen i get Core last seen 1 day ago
it appears the install may not have completed as i see no end points etc.
when trying to access core at i get Failed to load device state(status:0). Please refresh. i have manually set port forwading in my router to 55000 for above ip as suggested. i do have access to my music and it will play only on the local device as it does not show any endpoints.