Still have not been able to find out how to delete an account. As I wrote before, I initially signed up using my Google login. Big mistake, as all notifications then went to my gmail account (used mainly for travel), even after specifying my preferred (home) email as "Contact Email." I sent a description of the problem to "firstname.lastname@example.org" which is where The Maven website says to direct technical inquiries. However, two attempts failed. The emails were returned as undeliverable, stating that the "email@example.com" email address does not exist.
I did sign up for a new account (under new user name) using my preferred email address. However, then I was receiving notifications at both email addresses. I blocked the notifications on gmail, so those now go to my spam folder, while notifications are received at my preferred email address inbox. This is better than before but still not the most desirable situation. Surely there must be a way to delete an account?