EZ Green Screen has never removed gray backgrounds. You were probably using the “Image Extract” plugin to extract the gray backgrounds. There is no difference between the EZ Green Screen 8.0.0 (beta) vs. 8.0.1 other than I updated the adjustment ranges on some settings and fixed a UI display bug.
See if you have Image Extract installed. If not then you can download it on the downloads page on the website. It will work with your Platinum license. You will just need to enter the key.