The "like" symbol finally appeared two days ago. I stil don't see any way to edit posts or quote all or parts of other posts. I don't see anyway to add emoticons that others have mentioned.
There's too much empty space as viewed on my laptop. Three single-line posts take up my entire screen. The font looks lighter and bigger than before(?). The new format seems less engaging. Maybe with time I'll get used to it.
The group permissions were screwed up after the import, they should be fixed now. But I will check to see why you don't have edit permissions.
There's an option for "multi quote", maybe that needs to be set? However, quoting a single message can be done with "reply", on the far right under each post.
Emoticons should be in the toolbar above the post.
There is an option to make the screen fluid, full width, at the bottom left corner. The diagonal arrow icon.. Does that help the problem with your display?