Help resetting a Digi Controller/ Ethernet card vintage 2005 to default root

I purchased a Rf Modulator on Ebayfor our non-profit organization. It is of circa 2009 vintage. It is controlled by a Digi Card with micro-controller and wired USB, RS-232 and Ethernet port. It has an embedded website that controls the device.
I have tried to reset to defaults via the reset switch on the Digi card using the digi procedure.

I cannot reset the log-in, password or IP Address to the default. Reset procedure does not change to defaults. How can I do this?
I am new to the forum so my apologies if this is not the place to ask this question

Do you have a part number for the Digi product you have?