I wonder…I developed proteinuria and was diagnosed with a “benign” plasma cell disorder called MGUS, a few months after my 2vaccines (Moderna). It was from a physical and very unexpected. I also had 2 boosters in 2022. (Had a very mild case of Covid over a year ago.)

That’s been over 2 years ago, and my proteinuria has gone away, and the MGUS is stable and remains benign.
I’ve taken turmeric supplements so maybe that’s helped?
No one knows if the vaccine will cause problems over time yet. It is known to cause some inflammation that is hopefully transient.