critical error when using "sequential ordernumber plugin" with CCV plugin

[PGruijters]

Wordpress 5.8.2 with WooCommerce 5.9.0,
CCV Online Payments for Woocommerce version 1.3.0
WooCommerce Sequential Order Numbers version Versie: 1.9.5 | Door SkyVerge

Pugin works, but we want a sequential order nummer and not the post ID's, thats why we installed an extra plugin for sequential order numbers, after plugin is installed every new order gives a page with a critical error

url: http://192.168.1.53/wc-api/ccvonlinepayments_return/?order=22&key=wc_order_fGf1NIW02aoQy&payment_id=8

(my locale test server)

_post_meta table, has a extra entry with ordernumber

_posts table

it seems that the CCV plugin cant find the correct orderID