Okay. Chances are we will need to have Verizon check the OLT/PON out to see if it is congested or faulty. You might want to try calling the Fiber Solutions Center while this is happening to see what they can find. You should be able to reach them through the main 1-800-VERIZON number.
If you know the model of your ONT, please share it. This will help us find out if you are on BPON or GPON technology.