As per GDPR Compliance, Survey Respondents can perform the following actions:

Right of Access Enter your email address to access any survey data you may have answered
Right of Correction or Completion, Right of Erasure and Right of Data Portability Enter your email address to access any survey data you may have answered
Right to Restrict Processing Enter your email address to get block a Data Controller from entering your email address and other information using their Survtapp account. This will put you on a blacklist and no Survtapp account will be able to
Right to be informed Enter your email address to get an email alert whenever a Data Controller enters your email address in their Survtapp account