Monthly subscription cost advertised not available? – Sing bot — learn to sing Review

I am not able to find the monthly subscription cost advertised in the App Store. The app just keeps asking me to pay the yearly subscription cost of $80 every time I try to open something past the third level. I tried to email the support email given in the settings of the app, but wasn’t able to send an email to it. I would like any help or any suggestions as to what I should do? Is anyone else experiencing this problem?
Review by Monthly Sub Not Available on Sing bot — learn to sing.