You can purchase multiple codes and apply it to the same email address. However, since Bika.ai uses a space-based pricing model, it will not add usage to the same space. Instead, it will create a new space with the benefits of your newly purchased code.
For example, if you’ve redeemed a Bika.ai Tier 2 space using abcd@efg.com and later purchase a Tier 4 code from AppSumo, activating it will create a separate Tier 4 space associated with the same email address.