@Book of Likes, I would recommend you enable the plugin User validation by Email. this will make at least sure the users have a valid (working) e-mail address. There are other spam helper plugins here on the community which you could have a look...

I can't remember if anything changed in the way polls worked. I don't think so and even if it would, we'd probably offer some migration upgrade. I can't find an upgrade so.... Also the Elgg 2.3 version was a long time ago so I...

composer update elgg/elgg this would update Elgg, you can replace `elgg/elgg` with any plugin you wish to update. Also have a look at https://getcomposer.org/doc/01-basic-usage.md#updating-dependencies-to-their-latest-versions view reply

You can retrieve the current session of the user by calling `elgg_get_session()` this will result in an \ElggSession object. You can set any value you wish by doing the following $session = elgg_get_session(); $session->current_space_id... view reply

Changing to ElggBatch will not make the process consume less CPU it'll go as fast as it can thus using all CPU. If you want it to slow down build in a sleep(). Bu then it'll take longer. Also with ElggBatch make sure 'limit' is... view reply

PR is merged, so in the next release of Elgg this will be fixed view reply

It's not recommended to manually remove data from the database unless you're VERY sure you know what you're doing. The suggestion to use ElggBatch will help with out of memory issues. Also don't forget to set... view reply

The plugin where you're trying is active? Have you flushed the caches? When you added the blog did you also publish it, so it's not a draft? Because the river activity for blogs is only created during publishing. view reply