Is not a problem of CF7 plugin.
Now I have activate the DEUBG option and then deactivate all plugins and all sites. Anyway the deprecate error persists.
Before i’ve done a similar test:
Deactivate all plugin and activate one for time and CF7 give me the errors. But maybe was a fortuity.
YoastSEO, WP Smush, Recent Post Widget Extended, Multisite Category, Multisite Clone. Jetpack, BackupWP, Akismet.
These are plugins installed in the network.
If I active the CF7 for each blog into my network that’s ok, but if i check active on the network i’ve got those errors.