EngTeach love , so sorry I just spotted your thread. Yes I had that problem , I posted and it appeared hours or up to a day later on the thread , back in its right place but missed by the thread owner as it was there too late.Mine is back to normal now. ( touch wood )
You need to email technical and give your username and the date you joined . Then also give them the times of posting and thread names of your answers that were not showing. Tell them this problem , there have been technical problems I was told , but once I emailed tech with the info I was up and running as normal within a couple of hours. Good luck :-) x