Background: The store worked fine until recently it was moved to a larger hard drive at a new IP. The hosting company initially had trouble with the SSL certificate but said they had this corrected and the URL now indicates https://. The store works as intended now but;

Within Store Owner Admin;
Select any 'New Orders' or 'Customers' then 'Orders' to update the order status.

Update Order Status from '1' pending to '4' Shipped. (actually any update of any status)

Administrator receives the information window stating:
~~~~~
Although this page is encrypted, the information you have entered is to be sent over an unencrypted connection and could easily be read by a third party.

Are you sure you want to continue sending this information?
[Continue] [Cancel]
~~~~~

If the Owner Admin presses [Continue] the SQL value 'orders_status' within table 'orders' is set to '0' (zero)

To correct this error: Goto phpMyAdmin and change the 'orders_status' within table 'orders' to an acceptable number (1 to 4) everything is good.

If any Order Status is changed within the Store Admin it results in the SQL table 'Orders' field 'orders_status' being set to zero '0'.

That is, Order Status can not be updated.

What causes this and how can it be corrected?