Hello & Welcome to Just Answer,
I'm Greg and will do my best to assist you today.
Sorry I didn't see your question earlier and to hear of any issue you are having with your device.
If you still need help with this issue:
I believe the issue is that the "Format" in the coordinate entry screen MAY NOT be correct (needs to be "h ddd.ddddd" format) AND that the minus sign needs to be taken into account by switching the "E" to "W".
I have attached a few images that show these screens on one of the units I have. Please click the following links to see those images.
When I entered those coordinates in the shown format (see image) it does show that location in Spain AND a campground at that location. I have a link to a Google map showing that location below.
Please give those entry methods a try and let me know what you find.
Take Care & Travel Safe, Greg A.