Search woes

[pstrg]

Windows 10 / latest AirDC++

Out of the blue, search stopped working days ago.
No configuration changes; checked router and it still has UPnP enabled.
Port mappings are being successfully created with either Automatic or Active settings.
Only Passive mode yields search results, with the usual limitations.
Really stuck.

p.s. Looking for answers on this board, found my own postings of a similar problem nine years ago... meaning that since then everything has worked fine.