_underscore found left of block titles

Ok let me try to help...

"Absent keys" simply mean that they are missing from your database. Don't ask me why. I have no idea. But I have problems with absent keys for profile blocks so I believe the solution is the same.

1. Go to your Admin Panel > Builders > Page Builder > Homepage.
2. Click on the block that has the problem e.g. "_Forum RSS Feed". This will cause the option box to appear for this block.
3. Take note or copy down the "Caption Lang Key". In your case it's probably "_Forum RSS Feed".
4. Now go to Admin panel -> Advanced Setting -> Language files.
5. Click on "Add a new language key".
6. Type in "_Forum RSS Feed" for "New language key name:".
7. Choose "Misc" for "Category:".
8. Leave "Language String Parameters:" blank.
9. Type in "Forum RSS Feed" in "String texts for available languages:".
8. Click on "Save changes".

Note: If there's an error message e.g. "Error: Could not insert a new language key.", it means that the "absent key" is already there, but the "String texts for available languages:" is empty.

If this is the case, do this:

1. Type in "_Forum RSS Feed" in the "Search for:" box.
2. The "absent key" should appear. Click on "Edit" for that particular key.
3. Type in "Forum RSS Feed" in "String:".
4. Click on "Save Changes".

Now go back to your site. Refresh it and see if the block no longer has the underscore. Do the same for the other blocks.