@HSB
1) it's working, just not enough space. Shorten text or enlarge fields.
2) slide down for 300 attributes does not usually work well
3) bad idea, star (*) will be added to required fields in next update
4) if it's integer value plugin will take care of it. anyway it's just tiny improvement, if I enter range 2020-2015 I cannot expect anything.
5) Maybe in future. Text field can be used meanwhile. It's also not expected anyone would want to define day of registration.
6) all ok
7) more filters button is just "backup plan" and may not contain all search values. It's expected you will utilize custom integration instead and bring search box to page.