Products Stuck in Cart after checkout

[chill_e_g]

Hi Guys

VirtueMart 3.0.7.4 , Joomla 3.6.2
shop.scrapbookstudio.co.za

Please can someone assist me, fixing this issue is beyond my knowledge level. After checkout, all products remain in the cart. Tried upgrading VM only to have more issues.

[Jörgen]

Hello

You have updated to incompatible Joomla version. With Joomla 3.6.2 you need VM 3.0.18.

3.0.7 is a testversion compatibel with Joomla 3.4.1.

regards

Jörgen @ Kreativ Fotografi

[chill_e_g]

Can I downgrade Joomla? just to fix the site for now.