Replication(initial load) taking long time

hi experts,

I've created the RFC connection and SLT configuration. I raised 5 tables replication at 5 pm. Several minutes later the

current action turned to "Replication(initial load)", and the logging table \trigger\ target HANA tables are created.

But no  tables became In Process. The Status in Hana Studio Data Provisioning remains Scheduled.

And no data has been loaded into HANA tables.

I got into Job overview and the jobs seems problem. But i don't know why no calculation jobs and only one load job.

My SLT config is as follows:

So could you please tell me why the replications' status remain Scheduled and no data loaded?

thank you for your any reply.

Chong.