We have struggled with this in the various clonal plants we study. I can not speak to the specific relationship but you are very limited in using these markers for population genetics work. As to the fingerprinting, if you treat them as dominant markers in your analysis you are on firmer ground. Caution is called for if you try to use them as co-dominant.

I hope getting your question correctly. SSR marker is a multi-allelic and co-dominant system. Due to that, the marker is widely used in DNA fingerprinting. However, the genotype calling can be challenging and sometime errors occur, compared to bi-allelic marker, SNP. The ploidy level definitely correlates to the number of alleles per individual, at least. The higher ploidy level, the more alleles you will get.