Well since you only have 1 day left to make the rollover contribution may I suggest you go to a local bank or use an ONLINE broker to set up and fund the account TODAY.   You can change IRA custodians later if needed but you have an immediate deadline of TODAY. 

If you file a request for filing extension for your 2019 tax return, the deadline for completing the rollover of an offset distribution (code M) is extended to October 15, 2020.  You had better request the filing extension, complete the rollover of the offset distribution, then file your 2019 tax return.  Even though you request a filing extension, your 2019 balance due (or something close to it) is still required to be paid by July 15, 2020.