IP whitelisting in twitter (the joy of full tunnel VPN)

Hi, We recently flipped from a split to a full tunnel configuration in our firewalls that live inside a big cloud provider. Seems that twitter is rate limiting us because it measures an immense number of API hits from a couple of IPs. Not sure if they have any process to whitelist such VPN endpoints. At least, I couldn't find anything in the web. Does anyone else have similar experience? Is there any colleague from twitter who is willing to reply (publicly or privately). Regards, Yannis