I'm well late to the party but what happened to former Istock long time contributors?
When Istock changed a while back, I don't recall what the program was and how a contributor could have their images sold on the site. I had a portfolio since 2004-5 of multi-thousands images and some videos and then when they changed, I did nothing and don't know where I stand now. I can certainly phone them tomorrow but thought I would ask others what the program is. Thank you.
Do you mean you have multi-thousands of images still on iStock, but haven't logged in for a couple of years, since they moved onto ESP?
If so, you should have been paid during that time, whenever your earnings in a month went over $100 by month's end; but if you didn't fill in the tax questionnaire, they would have kept your payment (not 100% sure, was it only those outwith the US who had to fill in the tax questionnaire?).
If you had that many images and kept them there, I'm surprised you haven't wondered about where your payments have been until now.
BTW, I don't think contributors can phone them, but if you lost or didn't get your email with ESP log-in details, I'm not sure what else you can do.