Report for triggered alerts past 1 day for 2 specified alerts only

Try this in your Custom Table resource (SQL Query, not SWQL)

SELECT
Name 'Alert Name'
,EntityCaption 'Object of Alert'
,COUNT(1) 'Times Alert Triggered'
FROM AlertHistoryView
WHERE EventTypeWord = 'Triggered' AND ((Name = 'Cisco Store Router Down') OR (Name = 'Meraki Device Down (P3)') OR (Name = 'Meraki Device Interface Down (P3)))
AND TimeStamp > (GETDATE()-1)
GROUP BY Name, EntityCaption

Try this in your Custom Table resource (SQL Query, not SWQL)

SELECT
Name 'Alert Name'
,EntityCaption 'Object of Alert'
,COUNT(1) 'Times Alert Triggered'
FROM AlertHistoryView
WHERE EventTypeWord = 'Triggered' AND ((Name = 'Cisco Store Router Down') OR (Name = 'Meraki Device Down (P3)') OR (Name = 'Meraki Device Interface Down (P3)))
AND TimeStamp > (GETDATE()-1)
GROUP BY Name, EntityCaption