Database warnings while installing Matomo plugin

Support & Bugs
1

I’m installing Matomo plugin on our staging site hosted on Wordpress server to test it before move to production. But I’m getting some database warning messages. I would appreciate it if you could assist me resolving these issues.

  1. Connection collation
    CREATE TEMPORARY TABLES
    Changing transaction isolation level

  2. UTF8mb4 charset. Your database supports utf8mb4 charset, but your database tables have not been converted yet. (I’ve already converted the database to utf8mb4 charset but still getting this warning message)

  3. This is required to be able to store 4-byte UTF8 characters. Unless utf8mb4 is available special characters, such as emojis, less common characters of asian languages, various historic scripts or mathematical symbols will be replaced with �.

Thanks,
NB