People Can't See My Profile?

Maybe it's not activated.
Go back to your Dashboard. On the far left, click on Edit Profile (to the right of your photo). Make sure you've clicked "Share my profile". At bottom of page, click "Save Profile".

Remove Blogger Help Group Message

To delete a word (or the whole message) you left in Blogger Help Group (BHG)

[You can do it, but there's no direct way to do so.]

Revise your message
1. Copy your message and revise it. 2. Copy the new text and/or code. 3. Paste the revised info into a new message. 4. If it works out right, delete (Remove) the original message.

Remove Message In Blogger Help Group:
1. Click on "more options" in the upper right corner of your own message. 2. Click on "Remove" in the list of options in blue text. 3. Click on "Yes, remove it now". 4. Click the "Confirm" button.

If it feels like you're telling it to do the above 3 times at least, welcome to the club!

Dashboard Example

These are some old instructions and I'll update it when I feel like it. The screen has changed. Sorry.

Above screenshot shows several blogs on the left, the Edit Profile section on the right, and the Language drop-down menu below that.

Edit Profile, to state the obvious, is where you go to paste the url for your Profile Photo.