FreePBX 15 is EOL so any bugs there may be permanent – are you able to upgrade to 17 this weekend ? See 
Courtesy Reminder that FreePBX v15 is EOL Starting 1 October 2025
FreePBX 15 is EOL so any bugs there may be permanent – are you able to upgrade to 17 this weekend ? See Courtesy Reminder that FreePBX v15 is EOL Starting 1 October 2025