Loud ads on a sleep app!?

Ive used this app off and on for years as needed and liked it. BUT opened it tonight, started my calming noise, set timer, and then loud shooting noises start from an ad! The complete opposite of what I wanted... Will be finding something new after all these years: sudden loud noises is a deal breaker for what this app is for.

Nodccc about Sleepmaker Rain 1, v6.0