Class WWOCCM doesn’t work

Hi, your plugin is very usefull and as a developer I worked with it without problems. But now from the version 7 I can’t call the class WOOCCM and it seems that if (class_exists(‘WOOCCM’)) { } is false so I can get something like this: $billing = WOOCCM()->billing->get_fields();
The same issue with shipping and additional, can you help me to fix the problem? I know that I can use get_meta_data from order but I should map manually the key with the label…