Non US-resident, need to file 83b election TODAY with the IRS - I have an SSN but it says "valid for work only with DHS auth" - is this OK?

I am Canadian and are back in Canada. Last year I had a J1 visa to work in the US and I obtained an SSN while there, it says “valid for work only with DHS authorization” on the SSN. My J1 visa has since expired and I am back in Canada.

While back in Canada I have been working remotely for another US company and have been given stock. I am planning on moving back to the US around the time this stock vests and I was told it was smart to file an 83b election. The 83b election asks for an SSN. I have an SSN. However, it says valid for work only and my J1 visa has since expired.

Am I allowed to still put down my SSN number on the 83b election? I think SSNs are valid for life, but it does say valid for work only and my J1 visa has since expired.

I need to know TODAY because my 30 day 83b window is almost at an end and I need to mail this!