Ah, okay then. I would recommend holding onto your soul seeds for a half BP event, because the SSR rate from gold boxes is rubbish. For now you should really only host your own Magnas or join when you have BP to spare.
49 only... Puffff. Try between 250-300per day,if u do that for seven days maybe just maybe 1 ssr will drop. .... Its not like drop ratio is a new topic And please read other posts Cuz for me .. Maybe cuz I'm blunt, and others and maybe you soon will feel the same , it's better to see many experiences instead of 1 persons, thus u see others experiences and u might just discover something.
If I recall a conversation correctly between some of the members here, they gave an estimation of 1 SSR every 200 runs. So it is pretty common for your case, nothing to worry about.
Not sure if any of the mods still support this community, but they should be aware that the forums are infested with bots and that their forum needs to be upgraded.