Stone Vigil Dungeon 3 bugs. (unable to advance in the story line)

Time: 6:00pm GMT (Multiple different times this happened)
Frequency: Always
World name: Excalibur
Character name: Kaizuko Lionnellais
NPC name: N/A
Monster name: all
Class/Level: DRG/WHM 50
Party or solo: party, 4 people
In-game time: Multiple times (always happens whenever i try) (8 attempts)
Area and coordinates: Stone Vigil (X:10,Y:11)

Steps:
1.after clearing the first Boss, and the Room after it (to the right) Monsters become invisible,,
2.(2nd bug) when i get KO'd and then press "Return" i am unable to move my character, and am stuck in the entrance, and when pressing "Shortcut", i also get stuck (can be fixed with relogging only)
3.(3rd bug) Upon relogging to fix the (stuck issue) / or when Disconnected and then logging in, i am (sometimes) unable to see my party members.

Connection Specs
Type of internet connection/provider: ADSL-3.00MB

PC Specs
-=-=-=-=-=-=- System Information -=-=-=-=-=-=-
Microsoft Windows 7 Home Premium
6.1.7600 7600
Microsoft Corporation
USER-PC
Gigabyte Technology Co., Ltd.
G31M-ES2C
X86-based PC
Intel(R) Pentium(R) Dual CPU E2180 @ 2.00GHz، 2000 2
BIOS Award Software International, Inc. F6, 2/5/2009
SMBIOS 2.4
Windows C:\Windows
C:\Windows\system32
\Device\HarddiskVolume2
"6.1.7600.16385"
(RAM) ‏3.00 Gigabyte

NVIDIA Geforce GT430
Integrated RAMDAC
3278 MB
1280x1024 (32 bit) (60Hz)
Generic Non-PnP Monitor
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Browser Information
Name and version of the browser currently in-use: Google Chrome- 29.0.1547.62
Internet Explorer Version: 9