Hit Or Miss Posting Photos

Hello,all. I’m having a bit of trouble posting photos from my tablet. It seems to let me post about half the times I’ve tried attaching a photo in a thread, the rest of the time it just sits there spinning it’s wheels. I have also wanted to create an album but cannot get any photos to upload. I would think it would be due to file size, but why then does it sometimes work? If file size is the issue, what is the best route to correct this using an iPad to handle my pics? Thanks, all. Ooh! Time to take me meds!!