I think you need to disable the native approval which kills the Page: Approve Vendor Bills in order to use Suiteflow / as Approve Vendor bills just checks the approved box and does not follow workflow.

haa! so I wont be able to use it for custom workflows if it has multiple levels? any other alternatives to bulk approve bills then

@Deepthi it does not work with us as well. We have to select every Pending Approval state (one at a time) in the Action field of that page.

Yes the actions we would have to select