Hi there,
I'm exploring Honeycode and just tried to lookup up some columns to the other tables for the relational table purpose. it freezes and keep running "circle" like loading.
any hope to resolve this? Also I'm looking to use my on-premises databases in here.
Hi @umittas2000, welcome to the community! 
I just tried this on a couple of different tables (setting a customized display text), and the feature is working as expected. If you are experiencing this issue only with that particular column / rowlink, perhaps you can first try to recreate the column or rowlink and see if that helps.
If you are experiencing connectivity issues in general, we advise to first check the areas noted in this article: Troubleshooting Loading, Connectivity, and Network Issues
If you are still having trouble, please feel free to submit an issue report to us by re-creating the issue, and clicking on the Help icon > "Report an issue." These reports contain logs which are helpful for our team to see what may be going on.