My matched songs in iTunes on my computer show the artists, but some do not show up on my iPad or iPhone?

My matched songs in iTunes on my computer show all the artists, but most artists do not show up in Music on my iPad or iPhone? I recently fixed the song titles coming back from Match update changed to Track ** by going thru every song's info (command i) and typing in the song title manually (fortunately I had a hard copy of all my song titles and artists and only had about 160 songs to do) and that fixed the problem. Now, both the song titles and artists show in my iTunes, but NOT on my ipad and iphone Music (There are a few that show up). I tried to test my "re-typing artists" into info manually on a few, but it didn't work. I also tried adding "Single" or "None" to the albumn title, but no go. Any suggestions?

Error 20, 21, 23, 26, 28, 29, 34, 36, 37, 40
These errors typically occur when security software interferes with the restore and update process. Follow Troubleshooting security software issues to resolve this issue. In rare cases, these errors may be a hardware issue. If the errors persist on another computer, the device may need service.
Error 1600, 1601, 1602
Follow the steps listed above for Error 1604. This error may also be resolved by disabling, deactivating, or uninstalling third-party security, antivirus, and firewall software. See steps in this article for  details on troubleshooting security software.
Error 1611
This error typically occur when security software interferes with the restore and update process. Follow Troubleshooting security software issues to resolve this issue. In rare cases, this error may be a hardware issue. If the errors persist on another computer, the device may need service.
As you can see, all of the errors point to an issue with the security software on the computer.  Temporarily disable that software or completely uninstall it.

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