My spell summon Fel Gaurd missing from my spell book
Of course it is - you’re a Druid. While the sticky has long since vanished indicating as much, errors on particular characters are still best reported from that character’s profile.
Note that the Felguard is only available when specialised in Demonology. It is also not present as a separate spell, rather (like every other demon pet summon) it is incorporated into the fly-out of the Summon Demon spell entry instead.
Is that why my bubble hearth isn’t working?