Joomla Real Estate

Re: my site www.propertybettysbay.co.za

1: If I do buying request all customer details dont show ( screenshot attached)

2: If I try to add a house at the frontend the following error displays
Fatal error: Call to undefined function picture_thumbnail() in /home/est28/public_html/components/com_realestatemanager/realestatemanager.php on line 2638

3: In Real estate manager search pro the max price to search is 6510000 and I have houses for sale for more than that in South african rand

4: The similar module displays the price in euro automatically and not in Rand or ZAR as I would prefer

5: There are 2 view link options , List or gallery . If I click on them it give me a 404 category not found error