not sure you will answer !!
1. can I display the user picture in comment like b4?
As long as you ask that is related with Easysocial question we will answer it
But it seems like you asking Easyblog support question in your current new domain site which we normally not support.
Unfortunately that was not possible to display user picture on that comment preview section.
2. delete comment date?
You can modify on this file ->
JoomlaFolder/components/com_easyblog/themes/wireframe/blogs/latest/part.comments.php
Once you updated the changes, you can copy this part.comments.php file store into your current template file location, so you do not need to worry your changes will missing when you update to next newest version.
JoomlaFolder/templates/YourCurrentTemplate/html/com_easyblog/blogs/latest/part.comments.php (you have to manually create those new folder from your template directory file)
3. image wall cannot set width height and column like b4 ?
We no longer allow user to set the height is because it will causing a lot of issue.
So you have to set the column from the module setting, if you would like to show 4, so your columns have to set to 4.
Can I delete london dining ? next post ?
You can disable it from backend > Easyblog > setting > layout > post option > post navigation - NO (refer on my attached screenshot below)