I have listbingo 1.4 which is pretty much the same as 1.3.8.
Start now is www.tradeordonate.com/component/listbingo/new or www.tradeordonate.com/create

I have created a custom SEF URL for "create" with link to index.php?option=com_listbingo&task=new with no luck...

If there is no way of solving it, is there a way to make an exception just for this? Because I really want to have artio joomsef enabled in my site!

You could probably disable SEF just for that one URL. First you need to disable SEF completely in Joomla's global configuration and click the Start now button, so you get redirected to the login page with original non-SEF URL in the address bar. Post that URL here and I can guide you further.

I think that it might be: www.tradeordonate.com/comprofiler/login but in any case I think that it wil l be better if you can guide me generraly and not specificcaly for this because it seems that we have also 2 more similar issues so we would like to now how to handle this situation in general.

Thanks in advance

Well the www.tradeordonate.com/comprofiler/login is not the original non-SEF URL.

Generally, there is an option in JoomSEF not to SEF URLs that match some regular expression. When you go to JoomSEF -> Manage Extensions -> Community Builder -> Common tab, there is an option "Do not SEF URLs matching regular expression". If you set some regular expression there, JoomSEF checks the original non-SEF URL and if it matches, JoomSEF doesn't make it SEF. So for example you can set regular expression like "view=login" (without the quotes) and URLs that contain this text won't be made SEF.

But in order to use this feature, you need to first find out the original non-SEF URL in the form of eg. index.php?option=com_comprofiler&task=login, so you can construct the correct regular expression. To find out the original non-SEF URL, you need to disable SEF globally in Joomla's Global configuration.

I have 2 URL's. I disabled SEF to found out the original URL's.
The 1st one is "index.php?option=com_comprofiler&task=login"
The 2nd one is "index.php?option=com_comprofiler"

How can I construct the correct regular expression for these 2 URL's?