If report is pending in approver's queue for 10 days, we have the approver's report to be rerouted the approver's approver/manager.
How often are email alert's sent to an approver for an expense report pending approval?
They should receive an email I believe 3 days after the report as arrived in their approval queue. You can also create/edit the reminder to send as often as you need it to up to the 10 days.
This is not that uncommon. However, this forum doesn't have anyone who can handle this for you.
What you will need to do is let your site administrator know the issue. They can rectify the situation for you. Most likely, they will assign you a new approver then send the report back to you. Once that is done, you will resumbit the report and it will go to your new approver.