SketchUp version revert problem (upgraded by mistake)


We have bought the 2018 version of SketchUp, which is compatible with V-Ray 3.0 which we use in our work.
We have automatically updated and our active license is now the 2019 version. Now we can’t go back to the 2018 version since our maintenance & support license is expired.

How can we get downgraded and obtain a 2018 license back again?

I hope there is a solution for us because we can’t continue work tough we have legally bought license.

I will send a message to you to explain the situation.

Thank you for the solution you sent!