I've used the forum in the past but it's changed a wee. First I had to find the instructions to post. If you have a general question one can't post.
When did this page/site become difficult?
LOL ....it's always had it's challenges .
After the last round of changes my only suggestion would be to be sure and log in BEFORE you type a post. I lost a couple posts by typing them before login and found it not to be a short cut and annoying because of the loss .
To answer your question tho ...I have no idea why it has to be so variable compared to a regular bulletin board.
@clueless1 : There are several threads, with numerous posts, on the topic of this forum and the difficulties people encounter. Here's but one sample specifically about logging in and the fact that it sometimes takes a couple of tries, etc.: