The previous thread on how to upload photos has been creating more problems than it has solved, so it has been deleted. It was out of date and most of the information was no longer relevant. Here is how to upload your photos in a few easy steps.
From PC:In your "Reply" box you will find an "Add image to post" button on the left hand side. Click on it.
A separate "postimage" window will open with the option "Choose images". Click on it.
This should take you into your PC files. Choose the photos you want to upload, wait.
Once all photos have loaded, hit your "Post reply" as you normally would.
From your phone:Scroll down to the bottom of the page, you will find a button to click on called "Desktop" or "Desktop Mode". You need to be in this mode to upload from your phone's photo library.
Once you've done that hit the REPLY button on the right hand side.
Then hit the "ADD IMAGE TO POST" button at the top left hand side.
This will take you into your photo library.
You can upload your pictures from there.
Hopefully that has removed any confusion regarding adding photos to your posts. There is no longer any need to go to a separate hosting site.