I do not consider I know lots about computers, apart from knowing that if I click the icon of the program, I want it usually appears.
That said, I have no problems using the current system to post a photo.
LR, I have just had a look at Photobucket and it appears to be much the same to me.
I uploaded a pic last week without a problem and it appeared in my album, so what are the radical changes you have experienced ?