as of 1:30 am, there is an issue with the bol API, once they have resolved the issues, orders will come in like normal.
there is no news yet from bol, but you can keep an eye out on their status pages:
https://partnerplatform.bol.com/nl/updates/?type=malfunction
update: 9:15 the issue was resolved by bol.
update, bol has added a message related to this:
https://partnerplatform.bol.com/nl/storingen/api-storing/