Your Mileage May Vary
I have used several survey apps and sites. Earn Haus to me seems to be dodgy. No offense EH people. 70%+ of the time I will go through a survey some of which run longer than 20 minutes only to reach the end with "Aw shucks" It happens 8 out of 10 times without fail. I don't see or experience that anywhere but EH. It isn't browser or device specific because I have tested even using windows Sandbox and Linux distros. Does that mean I believe they're running a scam? Nope. YMMV.