Rowyts said: What's your routine when you germinate a seed?
For Ipomoea purpurea, I just the seeds in a clean yogurt cup and put enough water in just to cover the seeds. Need oxygen access. Let it sit out of the sun in a warm place and wait for them to enlarge, which is a sign that imbibation has occurred. You should see seed roots quickly. Once that happens, install in a shallow hole in your growing container no deeper than say 1/4". You should see cotyledons in less than a week.
