Class 'awolibrary' not found

I've bought and installed plug_acymailing_awocoupon-2.0.9 and it  doesn't work with  AcyMailing Essential : 5.8.1, which is the latest version. Every time I try to add a Tag,  I receive the messages "Class 'awolibrary' not found"  or  "1146 Table 'everhome.#__awocoupon_giftcert_product' doesn't exist" . I run the starter AwoCoupon. What is going on? Please help.

Virtuemart 3.2.4
Joomla 3.8.1
PHP 3.7.0

Hello,

Please get the latest from My Profile -> Purchased files, all issues should now be fixed

Problems solved. Thank you Seyi.

Best Regards
Charilaos