Why does the Fing app keeps freezing up every time I try to edit devices names?

Why does the Fing app keeps freezing up every time I try to edit devices names?

Every time I want to edit the name of a device the app freezes up and I can’t do anything I don’t know if this has anything to do because I’m using an iPhone Pro 11 or it’s just a stupid thing the app is doing just to lock me out. I have a few devices in the device list that I need to add names to anything shows up is generic.It would be nice if I could change it to the name of the device not just freaking generic but the app freezes up when I try to edit.