Very cool project, I feel inspired to try something like this myself! I noticed there seems to be a use-after-return with the creds returned from CredentialMan

Very cool project, I feel inspired to try something like this myself! I noticed there seems to be a use-after-return with the creds returned from CredentialManager::retrieveCredentials (C-arrays can't be passed/returned by value). One solution could be to return Arduino Strings instead