Observant users of WSJT-X versions 1.9.1 and older may have observed decreased decodes in the past couple of days.  This is because the International Standard for FT8 was changed on December 10th.  The new standard is NO LONGER COMPATIBLE with the old program versions.

Go to the WSJT-X website and upgrade to 2.0.0 quickly.  You must stop using the older versions by the end of this year.

Once that change is made, your decode rate will shoot up as the majority of the users are using the latest version 2.0.0.