I suggest taking a look at your html sanitization settings make sure html isn't allowed in markdown settings.
Next step would be to move the other 2 topics from that category and check if you still see broken markup.
I got everything installed ngix configured but when I go to login I have this error message
LOGIN Unsuccessful We were unable to log you in, likely due to an expired session. Please Try Again
How can I fix this issue
@PaigeLynn Navigate to your nodebb folder in the console/command prompt, then type ./nodebb restart