If your system and mod is that old, then updating it to "current" would at least be a good first step. It may fix itself after that, it may not. But I think remodding your system is a good first start.
I have a link to the Softmod any Wii guide in my signature. Any questions about the guide should be a rely in the guide's thread. After that and your connectivity still does not work, then we can take a look at it from I there. Do everything in the guide, all of the optional stuff you should do since you have 3.x (things are optional for those who already have 4.3 systems)