Is it possible to drop an unsupported architecture from the store?

Does anyone know how long the channel needs to stay closed for the the solution given in this thread to work?

In the past, I left the channel closed for less than 2 hours and it didn’t seem to help at all. Yesterday, I tried leaving the channel closed for roughly 10 hours which definitely helped but things are still behaving oddly. On a i386 system where we do not want to offer a Certbot snap, I see this:

# sudo snap install --classic certbot
error: snap "certbot" is not available on stable but is available to install on the following
       channels:

       edge       snap install --edge certbot

       Please be mindful pre-release channels may include features not completely tested or
       implemented. Get more information with 'snap info certbot'.
#  snap install --edge --classic certbot
error: snap "certbot" is not available on latest/edge but other tracks exist.

       Please be mindful that different tracks may include different features. Get more information
       with 'snap info certbot'.
# snap info certbot
error: no snap found for "certbot"