Activation lock on company IPad
We have a company IPad which was used by a former colleague. He left some time ago, returned his equipment but its only now that we're trying to use the IPad again that we've found that his set up an activation lock. We recognise the Apple ID but don't know the password or mobile number it was set up with. Can anyone help with this please?
I'm not sure of the type/model number of IPad it is.
iPad 2