you used too much knot sealer. ....and you used a hot blow dryer which likely melted the knot sealer and made it gooey. you should also not have wet the hair so soon.
you only need a tiny, tiny bit of sealer on a cotton ball, dab the cotton ball off onto a paper towel to remove any excess and then, gently roll some sealer onto the base with the almost dry cotton ball. you should only see a very small amount of transfer. dry with a cool dryer and repeat the process for a second coat. you can skip the cool dryer step and let it air dry but please do not blow it dry with a warm or hot dryer.
do not wash or wet the base for 24 hours.
I hope this helps. I think your unit will be fine.......but for best results, follow the steps I've layed out for you.
DebbieS.