Send the queue will not batch reload 3.3.1

I’ve tried with 4 different browsers. I can send the first batch, but reload does not seem to work. I’ve tried all kinds of setting adjustments from tiny batches to large, but no go. I get this on the process que page:

Started
Processing has started,
One campaign to process.
Please leave this window open. phpList will process your queue until all messages have been sent. This may take a while
Report of processing will be sent by email
Processing message 58
Looking for subscribers
Found them: 7929 to process
Sending in batches of 4 emails

But that is all I ever get and have to F5 to run the next batch.
In the Log I see the batch run completes, then loads this:

Waiting for 30 seconds before reloading

Then nothing happens… until I F5 again.

PHP Version: 5.6.32 and phpList 3.3.1

Tried switching to Verbose 1 and get:

Sending 58 to xxx@bellsouth.net
It took 0.1636180000 seconds to send
waiting for 14.8 seconds to meet target of 15 seconds per message
Sending 58 to xxx@hotmail.com
It took 0.1506300000 seconds to send
waiting for 14.8 seconds to meet target of 15 seconds per message
hotmail.com is currently over throttle limit of 1 per 120 seconds (1)
Failed sending to xxx@hotmail.com
Sending 58 to xxx@yahoo.com
It took 0.1423890000 seconds to send
waiting for 14.8 seconds to meet target of 15 seconds per message
Sending in batches of 4 emails
batch limit reached: 4 (4)
Script stage: 5
4 messages sent in 60.02 seconds (239 msgs/hr)
1 failed (will retry later)
Finished this run
Waiting for 30 seconds before reloading

and stalls att his point - the reload never occurs.

Any advice appreciated.