Hey @sas p., thanks for reaching out to us.
Unfortunately, there's no way to automatically merge your two accounts, as the article mentions, however, you shouldn't have an issue sharing the files from one account to the other.
Can you clarify what you mean about the 50 GB limit? As long as both accounts have enough space, you shouldn't have any issues sharing any size folder.
Are you getting some kind of error?
Let me know.