Don't worry about it. I couldn't find the Wifi where I usually found it, so I am starting to believe they disabled it.
I did eventually abandon that location without getting a table and try another McDonald's, but that's a futile effort. I already know Tim Horton's isn't any good with their new Wifi as it seems to be shared between ALL PARTICIPATING LOCATIONS (which explains why one can't connect); stumbled upon that yesterday when I tried the second location and it told me it was connected without me trying anything there, and then refused to load anything in Twitter or e-mail.
I am going to have to keep looking, and I have no clue where. In the meantime, since trading seems to be impossible in my first city attempted (I'll try the library next time and see if they require passwords or if it's open; if not open or working, I'll have to change cities), I might just hack in a Ho-oh for now and see if that unlocks the secret, then dispose of it and proceed with the ?! collection (that way I don't have to wait for the REAL Ho-oh or for a good trading place and time to do this simple thing, though I will honour the wait for Rock Climb to get those secrets even though that's semi-pointless after 16 Gyms).