All sorts of issues with new data file

I'm having a few different issues with MYOB - mostly payroll - with a new data file I've been using for about a month.

1. Payroll:

Annual leave/personal leave not auto populating with 2.923/1.462 hours -

As per the attached, leave is not automatically populating with the hours for various staff members.  It's working for some but not others.  AND it worked last week for one staff member but not this week - I have not altered anything in the meantime.  I have to manually enter 2.923/1.462 with every pay on the random ones not populating.   AL/PL is ticked under their profiles and it shows as linked via the payroll category.  They're on a base salary so they've got the right entitlement linked.  It appears it's all set up correctly - it's only that his doesn't automatically generate the hours on the payslip.  What have I done wrong??

Employees TFN and Bank account details not uploading with Employee Self Onboarding - 

My last 4 new employees' TFN and bank account details haven't uploaded with their self onboarding.  After the first one, I thought he'd just submitted it before finishing it but now there's been 4 of them and they all swear they entered all of the details and were sent a message to say they'd successfully completed the process.  What's going on?

Super not calculating on annual leave - 

Superannuation is not calculating on annual leave taken.  As per the attached, I can't exempt any categories from this as the exempt button is not selectable so I know I haven't exempted it.  Why would it not be calculating?  And why can't I click on the exempt icon to check it?

Not payroll related:

Duplicate payments - 

I have been caught 3 times so far this year - this would have been my 4th - with duplicate payments.  The only reason I caught this one is because I set it up for an electronic payment but had to pay it manually so the original payment was left in electronic payments.  Knowing that I had to change the original payment to being paid straight from the bank account (not electronic clearing) I went to do an electronic payment a couple of days later and found these 2 entries waiting in prepare electronic payments.  I can't work out how this could have happened - even if I tried to pay it twice, there shouldn't be anything to pay if it's already sitting in electronic clearing??  If I did actually pay 262 through electronic clearing on the 31st of July, the next time I went to pay bills a few days later the second entry would have been sitting there and I would have thought I hadn't paid it and paid it again.  How does this happen?

Any help would be appreciated.

Thanks