On 9 Apr 2020 at 12:15, sam yanz via groups.io wrote:

After completing a qso, an error
comes up saying the date range is not
within the set date of the tqsl
cert.  After checking it, it is.
Please advise how to fix so I can
continue to get them uploaded to
lotw. This started after I updated
the programs.

Sam ... go to the ARRL-LoTW@groups.arrl.org
group ...

the new version of TQSL has tightened up
on 'errors' that used to be ok in upload files.
they can explain it to you there.