You can't make it work. The moment you reset the phone, you made the data on the SD card completely unaccessible.
See, when you make a SD card "Internal" rather than "External" storage the card is encoded. To that device at that time. It is done so that the card's data will not be readable by anything else. When you reset the phone, you would have removed the info that was placed on the phone when the card was made "Internal" storage. Making the card see the phone as a different device.
Since that info is now gone for good, from the phone being reset, the data on the card cannot be accessed.
You can wipe/format the card and use is for new stuff, but you can't access the stuff that was on it.