Hello William Walker
I checked on our portal and I can see that your trial license is still valid till 2021-11-05, so you have 3 more days. I think you could just reinstall SpaceClaim 2021 version in that time. It won't be possible to save the file with older version of SpaceClaim, but you should be able to save it as step file and use it in 2017 version. Let me know if you face any issue while doing that.
Regards.
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