I somehow totally missed this post, sorry about that. Probably read it at a weird time and then just forgot all about it 
Points 1 and 2 were caused by recent upgrades to our backend services and they’ve been fixed since.
Point 3 relates to Changes to Slipmat login / authentication and fixes are described there. Currently all automatic fixes are in place but if for some reason a manual fix is needed, the steps are clearly laid out in the post. Feel free to add more info in the comments for other platforms / browsers.
What comes to password reset emails, that’s a very hard problem that I’ve talked a bout here in length many times. The gist of the matter is that we use third-party email services that sometimes get blocked or eaten by spam filters. Dedicated services cost hundreds or thousands of dollars per month and we don’t just have money for that.
Every Slipmat user can help with this issue by making sure that your own email address is correct in your listener profile, that your backstage profile notification settings are tweaked as quiet as you want them to be and never, ever marking any Slipmat emails as spam. And, if they are marked as spam, unmark them manually to teach the filters. Slipmat does not send any uninvited emails, never, so just make sure your settings are correct.
Finally, if there are any issues that a user doesn’t know how to solve, you can suggest them to email slipmat@slipmat.io or to purchase a commercial support ticket by messaging me or emailing to that address.