A number of things not working in my plugin

Could someone please assist me?
It would’ve been nice and better understood if we were able to attach files like screenshots here but can’t find that option so this will have to do…here it goes…

Issue 1: On the affiliate Registration page, no column for users to enter preferred username/password. If I add this myself as custom fields, would it link directly to the lost username/password facility so that it generates an email with username/password reminder?

Issue 2: In my dashboard, I am unable manually approve affiliate and no notification is being sent to newly registered affiliate e.g confirmation email, approval email, status notification correspondence.

Issue 3: In my settings, I chose payment method as ‘PAYPAL’ but in the affiliates profile (on payment details), payment method is still showing as ‘CHECK’ but on a different page, it shows as ‘PAYPAL’, which is rather conflicting.

Issue 4: When I click on bulk actions, the only option it give me is to delete..does not let me do anything else like approve, block etc

Thanks