You can increase the number of bars in FSB pro. What you need to do is to go to FILE – User Files Folder. A folder will open. Than go to system and open Data sourse_your broker(for example with note pad).
When you scroll down, you will see that you have the Maximum bars set to 50 000. You can change the number to 300 000 for example.
Before saving the file, close the FSB Pro, and save the file. Then you can reopen it and use it.
Here is a video where I show step by step how to do that:
Also, from setting file you can increase the number of Slots(entry and exit conditions). By default they are set to 8, and you can increase that number.
Let me know if you have fixed it.