Yeah, for real. No matter what anybody tells you, MG Soil is good. A lot of people don't like or aren't used to the slow release of the nutrients. They tend to add extra, and then they end up with nute burn and sometimes an low pHd soil. Stick with it. I'm going to have to say either wait a little longer, or try again but germinate carefully. There's no way it's the soils fault. I germinate in a paper towel. The seeds couldn't care less where they germinated. As long as they have warm water.
And remember, when your plants get larger, don't add nutes for at least 2.5-3 months.