build: v9.0.1-1.0.28
level: 50 (50)
class: WARLOCK
spec: demonology

talents: demon_skin
demonic_calling
demonic_consumption
dreadlash
mortal_coil
soul_conduit
soul_strike

pvptalents: none

covenant: none

azerite: demonic_meteor = 1
desperate_power = 2
explosive_potential = 1
heart_of_darkness = 2
overwhelming_power = 1
unstable_flames = 1

essences: [breath_of_the_dying] = 1, the_crucible_of_flame = 1

sets/legendaries/artifacts: none

gear: apothecary_spellstaff = 1
argent_conscripts_bracers = 1
argent_conscripts_cord = 1
argent_conscripts_gloves = 1
argent_conscripts_robe = 1
argent_conscripts_treads = 1
ashjrakamas_shroud_of_resolve = 1
grondos_todo_list = 1
gruuks_evil_eye = 1
heart_of_azeroth = 1
nerubian_aegis_ring = 1
rimewoven_pantaloons = 1
ring_of_carnelian_and_sinew = 1
vile_manipulators_amice = 1
vile_manipulators_hood = 1

legendaries: none

itemIDs: 111548, 111948, 158075, 165614, 169223, 173844, 173845, 183535, 183538, 183541, 183576, 183577, 183631, 183673, 183674

settings: aoe = 3
buffPadding = 0
custom1Name = Custom 1
custom2Name = Custom 2
cycle = true
cycle_min = 6
damage = true
damageDots = false
damageExpiration = 6
damagePets = false
damageRange = 0
debuffPadding = 0
enabled = true
gcdSync = true
maxRefresh = 10
maxTime = 33
nameplateRange = 8
nameplates = false
package = Demonology
petbased = false
potion = unbridled_fury
potionsReset = 20180919.1
throttleRefresh = false
throttleTime = false

toggles: cooldowns = false
custom1 = false
custom2 = false
defensives = false
essences = true
interrupts = false
mode = automatic
potions = false

The Hekili is not suggesting the implosion ability at AOE situations ( i want to have the aoe buff "Explosion Potential" from the azerite gear) and i want to know if there is something wrong with my set up or something has change after the prepatch for the aoe rotation in general for demonology warlocks. Thanks in advance!

Conditions for Implosion are:

actions+=/implosion,if=(level<50&active_enemies>2|azerite.explosive_potential.rank>1&buff.explosive_potential.remains<3)&buff.wild_imps.stack>=3

At 50, you need at least 2 ranks of Explosive Potential (you have 1) before you'll use Implosion, by design. Sim yourself and look at your Implosion usage in sim.