authorization

i have 2 KOBO touch e-readers and since I charged the second one, abode digital editions no longer recognizes either of my e-readers, and neither does my computer.  My computer is "authorized" but nothing happens.  What can I do to get my e-readers recognized so i can use them?  Never had a problem until I charged my new e-reader - but they are both Kobo and both "touch" models.  Can someone contact me at fd838@ncf.ca not sure i can find my way back to this forum to check for responses. Thanks.