No offense, I understand the advantages of having accounts with local and national credit unions. However, all my experiences have been with larger banks and financial institutions. You may have to go through additional verification procedures with you credit union. It might we worth a short conversation with your local branch manger and see what the issue is. But, it may require a call with Goldman Sachs Apple Savings specialists. This hasn’t been my experience.
If you have an option of transferring funds from your credit union to a larger financial institution and then verifying through the process I outline previously, that would require less effort on your part. However, ultimately it may require an hour on the phone while the two financial institutions verify each other.