If the primary database status is suspect, application would not be able to connect. Action you may have to perform are: 1. remove database from alwayson 2. After removed the database from primary, check if synchronous secondary can bring it online, so that application connection redirect to connect to the secondary replica 3. If step 2 doesn't work. Restore from backup or repair the database
Sure, thanks for the feedback. If we have more people interested, I can take DBA classes. Currently I'm taking performance tuning classes. Let me know if anyone is interested for enxt batch.