Most parts store scanners will read SRS codes, but they won't erase them. You need an SRS-capable scanner to clear the codes after repair. Most high-end shop scanners will do SRS, so you're not limited to a dealer. That said, I'm not 100% certain you have a code. On
most Nissans, codes turn the light on solid. Blinking means the Bag Brain is stuck in "diag mode", basically it lost its memory and needs to be reset. That can be done without a scanner, see this bulletin:
https://static.nhtsa.gov/odi/tsbs/2018/ ... 4-9999.pdf
I'd suggest visiting the parts store to see if there are codes or not, and if none, follow the bulletin to reset the light. Use a watch with a sweep second hand, trust me that the procedure is very fussy about exact timing.