I've recently had some problems with eNewsletter after my plugins were disabled and reactivated looking for an issue in MarketPress (See here: https://premium.wpmudev.org/forums/topic/uploading-products-has-stall ). At first, the eNewsletter member list was unavailable. However, that list has reappeared seemingly by itself.
But now, subscription options for regular users (not admins) are unavailable. If I switch to one of my users, I cannot access their eNewsletter subscription options.
Also, new users signing up to the main Wordpress site are not automatically added to the eNewsletter Member list. They are added to the Membership Premium list, however. I would request that you add the same hooks Membership Premium has to eNewsletter, in order to more accurately and easily add new members by default.
Help with the above issues would be most appreciated. Thanks in advance.