To claim the free consultation, just add Consultation 30min and apply the code: free_consultation at checkout. (Once per user even with memberships).
For Gold users add Consultation 30min and use code: gold_free at checkout. (Gold users can use this code 2 times per month)
For Silver users add Consultation 30min and use code: silver_free at checkout. (Silver users can use this code 1 time per month)