now i am thinking even using API (a bot) won't help you. but it is worth a try.
Already down ~7% today due to being unable to sell. It is so annoying..
from what i have been seeing, people complain a lot about poloniex specially in times like this when there are a lot of traders using their website that their servers can not handle.
you can also check out their twitter account and see in the past they have been having same tweets (if they don't delete them). it says "we are experiencing down time", "we are under DDoS attack".
No. If you either use a vpn/proxy you will get this, but you will also get this if you use a dynamic IP, you might want to see if you have that..