I checked and the links in your grid seems to work fine.
The posts goes to individual post's page and some goes to the alternative link you have set in the grid post settings.
For example this post - 21 ADAR 1 / FEBRUARY 26 goes to https://conta.cc/2E9Kyvm
Which is correct since you have added an alternative link
then this one 23 ADAR 1 / FEBRUARY 28 goes to https://www.dafhalacha.com/23-adar-february-28/
which is also corrct since you have not added an alternative link
Please try to clear your browser cache and check again.
For additional information kindly refer to the links below