Signalink and radio

zig zag <big.zigzag@...>

Dear All,

Good day,

I have a signalink and icom 2300 h 
some time I link my radio or SDR to the signalink with zello to allow my to listen to VHF in my city .

when I use zello in my smart phone I can listen perfectly.
but when I press PTT the others always give me feedback thank my message is not good , they can understand what I'm saying but there is a gap between each word that I'm saying.

its look like I'm pressing PTT and release after each word

my qustion is 

how can I fix this issue ?
also if there is better software instead of zello.