we need a patern to repeat, otherwise it's a lot of searching.
About 1st issue, that you cannot enter text, ussually it's because emails has a limited number of characters, so you can delete the previous email text, and try to type.
More explanation @Paul:
When the issue occurs, should see if restarting presence or lookup helps. If so - that is the issue and should be sorted. First need to ensure that that is the issue...
Hello!
You can mark it as closed as option. If document is connected with other documents you can not delete it so you will not be able to delete PO, as you will not be able to remove Goods receipt...