@Trng1122
First I’d try to keep the temperature of both phases (oil and water) at 70-75 °C in the emulsification step, and as was said, move the HEC to water phase, the heating will thicken the water phase and you won’t need TEA. Heat water up to 60 °C, add edta, glycerin and under stirring you can add HEC, 5 to 10 min you’ll have your HEC-gel.

In fact, 10% of propanediol is waaay too much for your formula. I would try 4% or maybe a combination with ethanol (2:2:2 ratio). 

Hope this can help you fix your fomulation