The website from the service in question also suffers from severe JS-errors on their page (FF 66).
I always manage my passwords on my computers, and type in on phones as needed. Simpler and just works.
To easy the pain of typing passwords, I always follow a consistent format that's easier. Example:
7,#/T8z%FS%zht6S
ctaq.zwjd.qnbu.ut1A
The first one is terrible to type on a little Android keyboard whereas the second is a breeze, and still perfectly respectable as far as password strength goes.
[1]something that will not likely happen between family, work, and chores around having a large property