Probably this is a know issue.
Problem is Visual Composer (and other similar content building plugins) wraps the content in additional html elements. The Read More Login plugin cuts of the end tag of these elements when hiding remaining texts. This cause page to be messed up.
I have made a hot-fix to overcome the problem. Instruction and downloads:
https://www.readmorelogin.com/custom-editions/hotfix-edition-nairobi/
The hot-fix will be merged in future releases.
If you have another problem not related to what has been described here, please let me know.