We have not added any new extensions or plugins other than updating to the newest nightly build of Community Builder today. But for some reason our links to registration pages are now showing as blank.

URLs we are using (and have been using for a very long time):

Plan 1
index.php?option=com_comprofiler&view=pluginclass&plugin=cbpaidsubscriptions&do=displayplans&plans=1&lang=jp

Plan 2
index.php?option=com_comprofiler&view=pluginclass&plugin=cbpaidsubscriptions&do=displayplans&plans=2&lang=en
index.php?option=com_comprofiler&view=pluginclass&plugin=cbpaidsubscriptions&do=displayplans&plans=2&lang=jp

I have gone over every possible setting to see if, by chance, something important was somehow modified, but I can find nothing.

Is there something I should look at the might give a clue as to why this suddenly started happening?

The website is showing, it is just the CBSubs part that has disappeared. All settings for plans and CBSubs global configuration are the same as they have been for a long time.

CB Paid Subscriptions plugin version 4.5.0+build.2021.03.01.06.37.41.6701638db is installed and published

Registration settings
Show subscription plans at registration = Yes
Allow Free Registered Users (without subscriptions) = No
Create Subscriptions also for free lifetime plans = Yes

Renewals and upgrade settings
Show Renew/Reactivate buttons = Yes
Show subscription plans upgrade possibilities = Yes

Both of our plans are published with
Allow new subscriptions = Yes
Allow registration = Yes
Allow upgrade to this = Yes
Access Level = Public
Access group = Public

CBSubs itself seems to be working, as logged in users can see their subscriptions tab and can renew or upgrade, etc. And the plugin is generating expiration emails and processing mailer items normally.

I have created a few new Auto Actions recently, so just to check, I disabled all Auto Actions, but it had no effect.

Do you have any suggestions of other places/settings I should check?

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