• create new certificate on app store connect, download and open with keychain
• create new developer profile on app store connect selecting that new certificate
• download profile provision file on the Profiles menu
• open the repo's ios folder on xcode
• import the profile to xcode on
  • Double click on Runner on the left menu
  • Go to Tab Signing and capabilities
  • Under provisioning profile, import it
• issues that might happen:
  • cant download certificate: login with your developer account, click on Xcode on top menu > Settings > Accounts
  • Provisioning profile doesn't include signing certificate: delete the old certificate from keychain
  • restart xcode