Hi Kasia Apologies for the delay, I got back on this today and when I went to Ultimate Branding, noticed every setting had been lost (again). I have reset most of it up again, including SMTP, and now the test email is working - AND password reset emails are working. So maybe it is fixed now - I'll mark as resolved and post back if we're still having problems. Thanks!

Hi Kasia, I have disabled every single plugin on the system and switched the primary site to the Twenty Seventeen theme. The only plugin that I can't disable is Avatars for Multisite, I get a 500 error if I try deactivating. It's exactly the same though, from Users->Add user I can add a new user and I receive an activation email. In ultimate branding I can send a test email successfully. Just the reset password email throws the error you got in your previous reply. I've (hopefully) reactivated the right plugins so the site's back up. Thanks

Thanks Patrick I have sent all the details across.

Hi Kasia, Sure, feel free to create a free membership. Thanks

Sure, I've now enabled support access. Thanks!

Hi Kasia, Yes I have that automated message activated, and also to send copy to Administrator. But I don't receive anything, and nothing in my mail system's logs. Other emails are going out fine, such as new user and site registrations from WordPress. Also the test message from Ultimate Branding SMTP settings is received fine. Thanks!

I network deactivated then reactivated Ultimate Branding, and found that the plugin had lost all its settings. When I have added the settings back in, they have taken effect, without me having to do anything else. Very strange, just a bit annoying that I had to replace the settings again!

No joy with adding WP_HOME and WP_SITEURL, still happens. I'll switch to using the Prosites registration form though as I can have that and user registrations through Memberships 2. Thanks!

Hi Dimitris, When you enable PayPal Chained Payments, go to the network admin, Settings, Store Network. Under the PayPal Chained Payments section at the bottom, the last field is: Application ID (Live) You must register this application with PayPal using your business account login to get an Application ID that will work with your API credentials. A bit of a hassle, but worth it! In the near future we will be looking for ways to simplify this process. Register then submit your application while logged in to the developer portal. Note that you do not need an Application ID for testing in sandbox mode.

More significant problem, is that I'm not able to create a new PayPal App to be able to fill in the field "Application ID (Live)". From PayPal: Adaptive Payments applications are no longer available since December 1st 2017. We're not onboarding any new merchants with Adaptive Payments. Does this mean in effect that the whole capability of "creating a network of sites like Etsy" as the documentation states: allowing you, the store network owner, to collect your share of the profits for a sale, while allowing your store owners to be sent the rest, is no longer possible? How can we achieve a similar effect with MarketPress?