If you had access to your Moodle classes during the semester but now they are gone, it could be one of two things.
You may have unpaid fees. If the deadline for payment at the UofL has lapsed and you have not paid your fees, your Moodle access will be revoked. To gain access to Moodle again please make sure your fees are paid. Once you have paid all fees you will gain Moodle access again immediately.
To check fee deadlines and dates: Financial Services Payment Deadlines
You may be using a bookmarked link. Moodle changes servers each semester and you will need to login to Moodle with the updated link.
a) You can type the link into your browser: https://moodle.uleth.ca/
b) You can find a link to Moodle from the UofL Web Tools page: http://www.uleth.ca/webtools