Thank you for your reply, Nick.
It's not a matter that I haven't paid the liabilities - I have.
When I left my office Thursday afternoon, everything was fine.
I opened Quickbooks on Monday morning to be greeted by a past due notification that I had outstanding payroll liabilities for quarters ending Sept 2019 and Dec 2019.
I assume it's because of an up-date that was done by Quickbooks.
I am also having problems with the homepage being "off" somehow.
Anyone else have this problem??