Q-Why do the community profile images not show publicly once they are uploaded

ANSWER- You might not be able to see your updated photo but others can. Depending which DAPPS you log into to view your community will show you the different updates, some are more quick to update. 

Q-How can you post as a community admin ?

ANSWER- Log into your dapp such as ecency, with your community admin information. You use your hive community number such as hive-1234 with your password key it provided to you when you created the community. 

Q-How can you easily switch between posting on a community admin account and your personal one ?

ANSWER Hive keychain extension for chrome browser, or save it on your browser/ ecency login logout should save some information once you input your community log in information! GOOD LUCK!!