Bandwith Exceeded Issue - Urgent Help Needed Please!

Hi Steemians,
Please permit me to use my account to seek help for a friend Hive account@kevaton . The following words will be that of Hive account@kevaton :
My account keep receiving the error message "bandwith exceeded please waith to transact or power up"

This restriction has prevented me from posting, upvoting, claiming of rewards and posting of comments.
How can I possibly fix this error and move forward?
Your kind help will be highly appreciated.
Thanks in advance for helping.
Hive account@kevaton