301 Redirect Issues

Having some problems with a couple of 301 redirects which were working until today. The behaviour is the same so I’ll just offer one as an example.

Redirect is setup to take audiences from /col/erwo20 to /erwo20store

Enter the URL directly and this still works (https://www.art-hub.co.uk/col/erwo20)

Click on the link from the page I’m trying to insert the redirect and it fails. [(https://www.art-hub.co.uk/ex/erwo20]((https://www.art-hub.co.uk/ex/erwo20) and click the large blue “Browse All Work” button about a third of the way down the page).

As I mention both behaviours worked fine but the second has stopped in the last 24 hours.

Any help appreciated, this for an event that is currently live so ideally need to find a fix fairly promptly…