Hello naveen jayawardeena,
We've received reports regarding the P&L reports showing incorrect date range. This has been raised to our engineers and they're already working for a fix. For now, I'd recommend contacting our QuickBooks Customer Care Team. They'll add your profile to a list of affected users and keep you up to date about the issue.
You can reach them through this link: Get Help with QuickBooks Online.
I'd appreciate your patience as we work through this.