After installation of 2.5.9.1 non of the coupon works

Hi,

I have One Page Checkout and VirtueMart with Awocoupon 2.5.9.1

None of the coupon works after i install the new awocopuon version. The error is:

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I return version 2.5.0 and now everything is working. Can you tell me what is wrong with the new version?

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Can you send me version 2.5.9 or something? because this old version the layout look broken at the back

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Joomla! 3.7.5

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Hello,

Can you give more detail of your setup?

Joomla version, virtuemart version, which one page checkout extension are you using and are you using the latest version?

Joomla! 3.7.5  VirtueMart 3.0.18 One Page Checkuot 2.0.314.200616

Right now i install 2.5.0 of Awocopuon. As soon as i install the new version everything at the back start to be very slow and the coupons are not working 

Hello,

opc 2.0.314 is from 2016.  You will have to upgrade opc if you want to upgrade AwoCoupon.