Hi Maurice,
I am sorry for the delay of this reply.
Regarding your photos migration issue, I've checked your site and it seems like the photos migration encountered script timeout issue.
Fatal error: Maximum execution time of 30 seconds exceeded in JOOMLA/administrator/components/com_easysocial/includes/image/adapters/asido/class.driver.gd.php on line 220
Can you try increase below setting from your php.ini to higher value, say 120 seconds?
max_execution_time
max_input_time
Also, I noticed most of your photos in JomSocial is very large. I would advise you to increase the below setting from php.ini to higher value as well.
memory_limit
Let me know if increase these setting helps or not.
Please advise.