Which chat plugin?

Which version of Elgg? Is the chat plugin supposed to be compatible with this version of Elgg?

chat plugin ? we have ?

Are you on a live server or locally?

Im on a live server

No emails sent at all (e.g. email notifications on getting a private message still received or not)? If this is the case, something might have changed in the MTA config on your server. You can test email sending directly as explained at http://learn.elgg.org/en/1.11/appendix/faqs.html?highlight=emails#missing-email.

Another possibility - especially if only the verification emails do not arrive - could be caused by the server being blacklisted on email spam lists. This can happen especially on new servers and if the server config (email server) is lacking some methods to allow the email providers to check the credibility of the origin of the email. Such mechanism are Sender Policy Framework (SPF), DomainKeys and a valid PTR record. I would suggest to ask the support of your server to configure the server for you and also ask them if the server IP might be blacklisted.

there is "PLUGIN" option is avialble you can change from there :)

In case you are looking for the mod folder: this is part of your installation. You can find the folder either in

/var/www/html/

or in

/var/www/html/elgg

Depends on your installation. Copy your theme folder into the mod folder and THEN activate it via the PLUGIN section. See your admin panel for it.

There are approximately a million instances of this question being asked/answered already, please try searching for the answer first.

http://learn.elgg.org/en/1.11/appendix/faqs.html?highlight=emails#missing-email

http://learn.elgg.org/en/1.11/guides/themes.html

http://learn.elgg.org/en/1.11/tutorials/index.html