Two Apple-ID's
I have two Apple-IDs. One was created from a yahoo.com account (where all my purchases iTunes etc., were made), the other, an @me.com account where I started using iCloud and the @me accounts when Apple introduced them. Somehow they both co-exist but many headaches arise as a result. Can someone help me either merge the two without losing all purchases etc? My System preferences are constantly asking me to sign into iCloud, and when I do, the cursor just spins for days. Won't let me do iCloud things without a password but won't accept the password when I try and enter. Had Apple support online for two hours one night without resolution. Then it came back a day later (by itself). Now the problem is back.
Mac mini, macOS 10.14