We take great care in making sure that everyone on Tandem is a real and friendly person and so all Tandem members must have a picture clearly showing their face on their profile. Make sure you have updated your app to the latest version and ensure you’re uploading a photo that clearly shows your face. The photo you upload must be at least 360 X 360 pixels in size. If you receive an error, please try another photo and double check that your photo is the right size and clearly shows your face.