Hey RussianBlue,
Thanks for the update. Glad to know there wasn't any issue with the image upload.
As for hiding some of the post type tabs in the quick post, unfortunately there isn't any setting we can use to achieve it. If your client really wants those tabs disabled, you can do a template override on the core file.
These are the steps to perform a template override:
1. Copy this file:
JoomlaFolder\components\com_easyblog\themes\wireframe\dashboard\quickpost\default.php
2. Create the directory mentioned here and paste the file inside:
JoomlaFolder\templates\yourCurrentTemplate\html\com_easyblog\dashboard\quickpost\default.php
3. Modify the code in the file that you have just pasted. For example, if your client wants the video tab removed, you can just delete this block of code which generates the video tab.
<li <?php echo $active=='video' ? ' class="active"' : ''; ?>>
<a href="#video" data-bp-toggle="tab">
<i class="fa fa-video-camera"></i> <?php echo JText::_('COM_EASYBLOG_DASHBOARD_TOOLBAR_QUICK_POST_VIDEO'); ?>
</a>
</li>
For the quick post default front page issue, I will log this in our issue tracker so the devs can look into it. Hope this helps.