Make sure in your user Profile you have Visual Editor un-checked. Sometimes when migrating WordPress sites you may lose widget placement for some reason. I would also un-install and re-install any plugins. But moving from one host to another host when your domain URL has not changed is usually easy going.
Can you take a screen shot of the exact problem? Since the editor toolbar going awol doesn’t really describe the problem seeing it may help. Sounds like you got some plugins messing with your site though.