Mundu for BB issues

I used Mundu as my IM chat client on my Treo and migrated the license to my Curve 8330. I have been using it without problems until recently. I have having a problem logging into my Yahoo account, it just will not connect. I have no problem with AIM or G-Talk, its just Yahoo. Has anyone here who uses Mundu had this problem? I uninstalled and reinstalled the program and it didn't help. I checked for upgrades and none exist. I contacted Mundu customer service and they have not gotten back to me, its been over a week.

Any help is appreciated.