When an affiliate register, their status will be inactive and need to be reviewed by you (unless you activate Auto active affiliate feature). Secomapp system will send you an email to notify about new affiliate.
Approve affiliate: In order to activate their status, go to Affiliate&Coupon section on your account, turn on Active button on Status column:
Inactivate affiliate: Or in case you reviewed their account and find some point inappropriate, just leave them inactive. Their affiliate account will be frozen and cannot get their affiliate link to promote your shop.
Delete an affiliate: If you delete an affiliate account, our system consider that you don't want to work with that affiliate anymore, so that affiliate email will be unable to sign up on your affiliate program again.
So we recommend you shouldn't delete an affiliate account if you don't actually want to delete it permanently.