The plugin sounds distorted
Lower Input gain, reduce Mic Pre Drive, Tape Sat or Push, Character Drive or Output Push, keep the limiter on as protection, and look for clipping before PublishMode in the DAW.
AUTO says it needs voice
Play a section with clear normal singing or speech, avoid long silences before the voice starts, and rerun AUTO on a representative phrase.
The gate cuts off words
Lower Gate amount, increase release, and use less aggressive cleanup before compression.
Cleanup sounds unnatural
Reduce Denoise, Deroom, De-Breath or Click amount. Use Delta to check whether vocal tone is being removed.
Effects are not audible
Open Vocal Suite with FX, turn on the suite master switch and the individual module, raise that module Mix, check that the full plugin is not bypassed, and switch to POST for Harmony and Character.
Tape does not null with every control at zero
This is expected. Enabling Tape engages its baseline machine path even at zero user settings. Sat, Push, Tone, Bias, Bump, Wow and Flutter alter that base sound; they are not the on/off switch for it.
Duck makes the vocal seem quieter
Delay and Reverb Duck do not lower the dry lead. They reduce the wet return while words are present, so the combined meter reading can fall even though the lead stays unchanged. Compare the dry lead with the ambience modules bypassed.
Latency is too high
Switch to LIVE while recording, confirm the quality display says OS OFF, and disable lookahead-heavy processing elsewhere on the monitored path. Use POST only after recording.