Make sure that the massager is fully charged before using it, as the massage intensity may feel weaker if it is low on power. Check that nothing is blocking the massage stem or any ports on the massager, and that your chosen attachment is firmly and properly connected to the massage stem.   Do not attempt to disassemble or repair the product by yourself, as this may void any warranty in place. Instead, call or email us at support@tzumi.com or 1-855-GO-TZUMI, and an experienced customer service representative will be more than happy to help you.