Can Not Assing DOI with CrossRef export plugin

Dear Folks;

I have CrossRef membership, I have Crossref credientals.First I entered my DOI prefix, Journal Content as article in DOI Plugin Settings and saved. Then, I entered Depositor name and e-mail; username and password which were taken from Crossref in CrossRef XML Export Plugin and saved. After I entered Article tab in CrossRef XML Export Plugin, But any article was shown in the list even back and future issues. Can you help me for solvig this problem. I haved added screenshot. Kindly, help me.
failure
failure1

Hello @dr_zec,

Can you please indicate what version of OJS you’re using (e.g. 3.3.0-8)? And, also, perhaps the version # of your Crossref plugin.

-Roger
PKP Team