Activation code can be used only once, hence if you have already used it simply Login to GOQii App using the same Mobile number you have initially used when Activated your GOQii account & used the Activation code.
If still you are not able to Login then please reach out us via GOQii App ->Home ->Support and help us with your SR number of the activation card. We can investigate and get this addressed.
If you have not used the Activation code & lost the activation card, then please reach out us via GOQii App ->Home ->Support and help us with the Purchase invoice/Orders Details. So we can assist you further.