Speed dial app freezes in iPhone XS – Speed Dial - Smart T9 Dialer Review

I have been using this app for several years and never had any issue. I just got the iPhone XS and every time I want to use speed dial it freezes and I cannot use my phone for a while. I can’t even turn it off. not sure why this is happening.
Review by Sallyjoe64 on Speed Dial - Smart T9 Dialer.