Key collection and compliance activities have been temporarily suspended by the IRS in the wake of the COVID-19 pandemic. These include existing installment arrangements, pending arrangements, offers in compromise, non-filer programs, and others. In general, activity has been postponed until July 15, 2020, however the impact on running statutes of limitations has yet to be fully determined.
See the second link, below, for specific information.
Here are some helpful links for more information, which should be updated on a regular basis: