If your problem is yeast-related, there is a Candida Forum . There is one for eye problems too.
I've gotten rashes many times while sweating during detox. They usually go away fairly quickly. I suggest a sauna bath if you know where you can find one. This probably goes without saying but I suggest you shower after a detox sweat to make sure your skin doesn't reabsorb the toxins.
I'm afraid your dentist may tell you that your fillings are perfectly safe and you shouldn't worry about your root canal. OK I admit I'm a little cynical about dentists these days.
I think the improvement in your sinuses is a hopeful sign. Good luck.