I had spend allocation enabled. I turned it off and now I can't figure out how to turn it back on.

The Spend Allocation feature for the legacy Business plan is now deprecated and available only to Enterprise plans. Customers that have previously utilized the feature in their organization, have had to disable the feature for some reason and now wish to have it re-enabled for their organization may contact our Support team to have it re-instated.

Please note, all organizations on legacy plans will be migrated to our latest plans in the future. If your Sentry organization was already using Spend Allocation before it's inclusion in the Business plan was deprecated this feature will be "grandfathered" into your plan's feature-set upon migration.

Warning: despite the "grandfathering" noted above - spend allocations do not support the allocation of spans so any allocations for performance units will not be migrated to the latest plan.