I have DP+ July 22 version, today when opening the galleries are missing from the RHS last night when closing they were all their.

They are all ticked in the Utilities>Galleries menu tab, except the Line Gallery which actually shows on the RHS.

When I try to open up from the Insert>From the content gallery it reports 'The Design Gallery must be enabled to import content. You can switch if on from the 'Utilities'>'Galleries' menu' I do not understand the report as all items are ticked there is no Enabling entry menu item.