Zammad not checking email, but Channel.fetch works

Technical assistance
2

I saw this: After upgrade No Mails and Delayed::Backend::ActiveRecord::Job id: 66271

from console:

irb(main):001:0> Delayed::Job.count
=> 0
irb(main):002:0> Delayed::Job.first
=> nil
irb(main):003:0> Delayed::Job.last
=> nil

And when I go to Settings -> Monitoring it shows an unhealthy status: my two channels are active but have not fetched in X hours. Going to health check page I get

{“healthy”:false,“message”:" channel is active but not fetched for about 2 hours; channel is active but not fetched for about 2 hours",“issues”:[" channel is active but not fetched for about 2 hours"," channel is active but not fetched for about 2 hours"],“actions”:[],“token”:ʺ}

I do not have a “Restart Services” anywhere that I can find.