crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934243:0crwdne2934243:0 Dan

crwdns2934249:0crwdne2934249:0:

The two middle screws at the rear are shorter screws. Sounds like you placed the screws into the wrong holes here.
Take a look at this IFIXIT guide for the full story: [guide|23426] Its also possible someone messed up in putting the cover on if you just had the system serviced.
=== Update (08/07/2018) ===
-
OK now I get it! The covers hole enlarged so the screw pulled through it.
-Sorry to say you'll need to get a new bottom cover. Here's one source [https://www.macpartsdepot.com/923-0561-bottom-case-cover-a1502-for-macbook-pro-retina-13-inch-late-2013.html|Boom Case Cover for A1502 MacBook Pro Retina Late 2013 - Apple P/N 923-0561]
+Sorry to say you'll need to get a new bottom cover. Here's one source [https://www.macpartsdepot.com/923-0561-bottom-case-cover-a1502-for-macbook-pro-retina-13-inch-late-2013.html?|Bottom Case Cover for A1502 MacBook Pro Retina Late 2013 - Apple P/N 923-0561]

crwdns2915684:0crwdne2915684:0:

open

crwdns2934245:0crwdne2934245:0 Dan

crwdns2934249:0crwdne2934249:0:

The two middle screws at the rear are shorter screws. Sounds like you placed the screws into the wrong holes here.
Take a look at this IFIXIT guide for the full story: [guide|23426] Its also possible someone messed up in putting the cover on if you just had the system serviced.
+
+=== Update (08/07/2018) ===
+
+OK now I get it! The covers hole enlarged so the screw pulled through it.
+
+Sorry to say you'll need to get a new bottom cover. Here's one source [https://www.macpartsdepot.com/923-0561-bottom-case-cover-a1502-for-macbook-pro-retina-13-inch-late-2013.html|Boom Case Cover for A1502 MacBook Pro Retina Late 2013 - Apple P/N 923-0561]

crwdns2915684:0crwdne2915684:0:

open

crwdns2934245:0crwdne2934245:0 Dan

crwdns2934249:0crwdne2934249:0:

-The two middle screws at the rear are longer screws. Sounds like you placed the screws into the wrong holes here.
+The two middle screws at the rear are shorter screws. Sounds like you placed the screws into the wrong holes here.
Take a look at this IFIXIT guide for the full story: [guide|23426] Its also possible someone messed up in putting the cover on if you just had the system serviced.

crwdns2915684:0crwdne2915684:0:

open

crwdns2934241:0crwdne2934241:0 Dan

crwdns2934249:0crwdne2934249:0:

The two middle screws at the rear are longer screws. Sounds like you placed the screws into the wrong holes here.

Take a look at this IFIXIT guide for the full story: [guide|23426] Its also possible someone messed up in putting the cover on if you just had the system serviced.

crwdns2915684:0crwdne2915684:0:

open