Serana Dialogue Add-on doesn't seem to work

I'm using MO2, placed the mod at the highest priority order/bottom of the list, and sorted the plugins with LOOT. I've double checked everything, made sure that SDA is enabled in both the mods and plugins panel. I also downloaded the SDA patch just in case and as far as I know, I have no follower-altering mods such as RDO. The only "follower" mods i use are follower trap safety (if you would count it as one) and Interesting NPCs (again, if you count it as a follower mod). Aside from that, there are none.

Initially, I installed the mod on an existing save file where I have completed the Dawnguard questline and saw no changes to Serana whatsoever, with the exception of her voice being changed. No new dialogue options. Just her voice being different.

I figured installing it in an existing save file must've broke the mod somehow so I made a new save and speedran through the quests until Chasing Echoes (the Soul Cairn visit quest). Still, to no avail. I also saw a comment in a reddit post saying that for them, walking away from Dimhollow Crypt or fast traveling anywhere else with the exception of the castle triggers some of the new lines. So, i reverted to another old save, where I was outside Dimhollow Crypt, and did just that. Nothing changed.

I don't think I've installed it wrong either, nor am I missing any requirements coz SDA has no hard requirements. Any help will be greatly appreciated!

Skyrim version: 1.6.659 GOG
Mod manager: MO2

Mod list:

+SDA Patch Hub SE

+Serana Dialogue Add-On

+Skyrim Priority SE AE - CPU Performance FPS Optimizer

-Alternate Start - Live Another Life - SSE

+Interesting NPCs SE (3DNPC)

-Skyland AIO

+Echoes of Oblivion

-Alternate Perspective - Alternate Start

+Gods And Worship

-Cloaks of Skyrim SSE

+Remember Lockpick Angle - Updated

+eFPS - Exterior FPS boost

+Visual Animated Enchants 2-023 AKA VAE2

+Sprint Stuttering Fix

+Sounds of Skyrim - Civilization

+Sounds of Skyrim - The Wilds

-Skyrim Revoiced

+No Camera Filters

+Lightened Skyrim

+Lawless - A Bandit Overhaul

-Improved Camera SE

+Forsworn and Thalmor Lines Expansion

+Extended Encounters

+Civil War Lines Expansion

+Bandit Lines Expansion

+The Dragonborn's Bestiary

+A Quality World Map

-Jaxonz MCM Kicker SE

+Yes Im Sure NG

+EVG Conditional Idles

-Immersive Equipment Displays

-Weapon Styles - DrawSheathe Animations for IED

+Simple Dual Sheath

+RaceMenu

+Better Third Person Selection - BTPS

+Project New Reign - Nemesis Unlimited Behavior Engine

-IFrame Generator RE

-TK Dodge SE

+SmoothCam

+True Directional Movement - Modernized Third Person Gameplay

+Untarnished UI 1.1.6

+Dear Diary Dark Mode (warm text)

+Compass Navigation Overhaul

+Infinity UI

+TrueHUD - HUD Additions

-SkyHUD

+SkyUI

+Security Overhaul SKSE - Lock Variations

+Instantly Skip Dialogue NG

+I'm Talkin' Here

+Infinite Stamina Out of Combat

+Infinite Horse Stamina Out of Combat

+Follower Trap Safety

+The Paarthurnax Dilemma

+Skyrim Unbound Reborn

+MergeMapper

+Spell Perk Item Distributor

+Keyword Item Distributor

+MCM Helper

+JContainers SE

+powerofthree's Tweaks

-Backported Extended ESL Support

+Address Library for SKSE Plugins

+Trainwreck - A Crash Logger

+SSE Display Tweaks

-SSE Engine Fixes 7 - Backport - 1.6.640 GOG 1.6.659

-SSE Engine Fixes (skse64 plugin)

+Insignificant Object Remover

+Bug Fixes SSE

+Skyrim Project Optimization SE

+PapyrusUtil SE - Modders Scripting Utility Functions

-PapyrusUtil - Modders Scripting Utility Functions

+Fuz Ro D-oh - Silent Voice

+Open Animation Replacer - IED Conditions

+Open Animation Replacer

+XP32 Maximum Skeleton Special Extended

+Animation Queue Fix

+Unofficial Skyrim Special Edition Patch - USSEP

+The Forgotten City

+Creation Club

*DLC: Dawnguard

*DLC: Dragonborn

*DLC: HearthFires