Once your offer is unconditional, RSM will confirm your enrolment and the Studielink status will change.
You should check the conditions of your offer in the Online Application Form 'OLAF' under the 'Offers' section. Instructions on how to make your offer unconditional are listed here.
If your offer of admission has already been made unconditional, your admission will be confirmed in Studielink, but this process will only start around the end of June. Until then your Studielink status will say "The educational institution has yet to determine whether your previous education level is sufficient”.