Can't ping retired machines even as a VIP member

I could ping only two retired machines (marked as available for free members) in the home/machines/retired; except for these two all other 18 machines are not reachable and receiving ‘Host seems down.’ for ex:,,… Could someone please help me to resolve this issue.

I don’t think this is a VPN issue cz I can access active machines and the two retired machines open for free users.

Your earliest response is highly appreciated.

This issue was resolved after re-generating the VPN pack.